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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

#6214. Three solid spheres of radii 3 cm, 4 cm, and 5 cm respectively are melted and converted into a single solid sphere. Find the radius of this sphere.

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.

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**math9maniac****Member**- From: Tema
- Registered: 2015-03-30
- Posts: 407

Only a friend tells you your face is dirty.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6214 is correct. Marvelous, math9maniac!

#6215. A well of diameter 3 meters is dug 14 meter deep. The earth taken out of it is spread evenly all around it to a width of 4 meters to form an embankment. Find the height of the embankment.

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.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

#6216. Solve when

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6216 is correct. Neat work, Monox D. I-Fly!

#6217. If

, find the value of .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6217 is correct. Neat work, Monox D. I-Fly!

#6218. A father is three times as old as his son. In 12 years time, he will be twice as old as his son. Find the present ages of the father and the son.

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

#6219. If

, find the value of and .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

#6220. If

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

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

#6221. In a triangle ABC, right angled at B, AB = 24 cm, BC =7 cm. Determine sin A and cos A.

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

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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.

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6221 (two parts) is correct. Good work, Monox D. I-Fly!

#6222. In a triangle ABC, right angled at A, if

, find the value of sinBcosC + cosBsinC.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6222 is correct. Excellent, Monox D. I-Fly!

#6223. In ΔABC, right angled at B, if

, find the value of sinAcosC + cosAsinC.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6223 is correct. Good going, Monox D. I-Fly!

#6224. If A and B are acute angles such that

find A + B.Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6224 is correct. Excellent, Monox D. I-Fly!

#6225. If

, find the value of .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6225 is correct. Excellent, Monox D. I-Fly!

#6226. If

, find the value of .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6226 is correct. Marvelous, Monox D. I-Fly!

#6227. If

, find the value of .Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**Monox D. I-Fly****Member**- From: Indonesia
- Registered: 2015-12-02
- Posts: 1,106

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**ganesh****Administrator**- Registered: 2005-06-28
- Posts: 24,007

Hi,

The solution #6227 is correct. Good work, Monox D. I-Fly!

#6228. If

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

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