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The sum of the radii of spheres A and B ...

The sum of the radii of spheres A and B is 14 cm, the radius of A being larger than that of B. The difference between their surface area is `112 pi`. What is the ratio of volumes of A and B?
गोला A और B के त्रिज्या का योग 14 सेमी है, A की त्रिज्या B की तुलना में बड़ी है। उनके सतह क्षेत्रफल के बीच का अंतर `112 pi` है। A और B के आयतन का अनुपात क्या है?

A

`64 : 27 `

B

`8 : 1`

C

`125 : 64 `

D

`27 : 8`

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