Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6550. A path of uniform width surrounds a circular park. The difference of the internal and external circumference of this circular path is 132 meters. Find its width.

Use

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6551. If the radius of a circle is decreased by 10%, the area of the circle is decreased by _____________ percent.

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6552. Find the perimeter (circumference) of a sector of a circle of radius 21 centimeters and central angle 30 degrees.

Use

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6553. What is the area of a semicircle of radius 28 centimeters?

Use

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6554. Find the area of the ring between two concentric circles, whose circumferences are 88 centimeters and 132 centimeters.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6555. The area of a circular garden is 2464 square meters. How much distance will have to be covered if you cross the garden along its diameter?

Use

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6556. A 7 meter road runs outside around a circular park, whose circumference is 176 meters. Find the area of the road.

Use

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6557. The breadth of a rectangular hall is three-fourth of its length. If the area of the hall is 768 square meters, then find the difference between the length and the breath of the hall.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,295

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

The

is correct. Excellent, Monox D. I-Fly!#6558. The length of a rectangular garden is 12 meters and its breadth is 5 meters. Find the length of the diagonal of a square garden having the same area as that of the rectangular garden.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6559. A copper wire of diameter 42 centimeters is folded in the shape of a rectangle whose sides are in the ratio 6:5. Find the area enclosed by the rectangle.

Use

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6560. The difference between the length and the breadth of a rectangle is 23 meters. If its perimeter is 206 meters, find its area.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6561. The areas of two equilateral triangles are in the ratio 25:36. Find the ratio of the altitudes.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

.

#6562. Find the area of a right-angled isosceles triangle having hypotenuse

centimeters.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6563. The measures (in centimeters) of a right-angled triangle are given by consecutive integers. Find its area in square centimeters.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,295

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

The solution #6563 is correct. Keep it up, Monox D. I-Fly!

#6564. If the length of each side of an equilateral triangle is increased by 2 units, the area is found to be increased by

square units. Find the length of each side of the triangle.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6565. What is the area of a triangle having perimeter 32 centimeters, one side 11 centimeters and the difference of two other sides 5 centimeters?

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6566. The area of an equilateral triangle is

square meters. Find the length of the median in meters.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6567. The areas of two similar triangles are 360 square centimeters and 250 square centimeters. If the length of one of the sides of the first triangle be 8 centimeters, find the length of the corresponding side of the second triangle.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6568. The altitude drawn to the base of an isosceles triangle is 8 centimeters and its perimeter is 64 centimeters. Find the area of the triangle in square centimeters.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6569. The area of a field in the shape of a trapezium measures 1440 square meters. The perpendicular distance between its parallel sides is 24 meters. If the ratio of the parallel sides is 5:3, find the length of the longer parallel side.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,295

Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away. May his adventurous soul rest in peace at heaven.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

The

is correct. Brilliant, Monox D. I-Fly!#6570. The perimeter of a rhombus is 100 centimeters. If one of its diagonals is 14 centimeters, find the area of the rhombus.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline

**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 26,405

Hi,

#6571. If the measure of one side and one diagonal of a rhombus are 10 centimeters and 16 centimeters respectively, find its area in square centimeters.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

Offline