Question

A solid sphere has radius 7 cm. Find its volume.​

Answer 1

Answer:

Given the radius of the solid sphere is 7 cm.

Then its volume is 34×π×73 cm3.

Also given the radius of the small sphere is 3.5 cm. 

Then the volume of the small sphere is 34×π×(27)3 cm3.

Let there be n small spheres.

Then 34×π×73=n×34×π×(27)3 

or,  34×π×73=n×34×π×873 

or, n=8.

Answer 2

Answer:

Volume of the solid sphere $= 1,437.33 cm^3$

Step-by-step explanation:

Radius of a solid sphere is 7 cm

Volume of any solid sphere $= \frac{4}{3}$ . π . $r^3$  [where r is the radius]

Volume of the given solid sphere  $=\frac{4 . 22. 7^2}{3} cm^3 = 1,437.33 cm^3$