Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
Post a reply
Topic review (newest first)
i am having a demo teaching in our school can you help me how to make detailed lesson plan for the 4th quarter my topic is factoring
Find the area of the largest equilateral triangle that can be inscribed
do you have any idea how to find the number of degrees in the angle at which the diagonal of the cube intersect.
Thanks a lot..
Need some help about the current issues, problems, and development in solid geometry and trigonometry.
thank you so much
I'm getting 4021 m^2 for the tins
To see the true angle between face VAB and the base ABCD you have to look along the line of intersection, AB
The first picture below shows the points, and the second shows the view along AB. You cannot see A because it is exactly behind B
If the size of an edge of the cube is 2S then the distance along the base to the point directly under V is S.
The angle you want can be found by tangents.
ps. I'm out now to a show rehearsal so I won't be able to reply until about 5pm GMT.
Q3 image model was right but i still confused with the answer of Q2 my prof, give me the answer for the problem it was = 4101.24 m^2
600 and 1200 are also correct for the four walls. But add the floor area and ceiling area too.
The radius of the top is 4cm.
plus the curved surface area (imagine the can is unrolled to make a rectangle 12 by circumference )
Add these answers to get the total surface area.
Then x by 100 000 for all the cans.
Now you have the answer in square cm.
A square metre is 100cm by 100cm = 10 000 square cm.
So to convert your answer to square metres, divide by 10 000.
Q3. Have a look at the picture below (click to enlarge). Is that the correct model for this question ?
the ceiling area = 2lw = 2lw
So there are six areas altogether. eg. floor area = 10 x 20 = ceiling area.