Question

1)

Answer 1

Step-by-step explanation:

(1) The radius of sphere is 4.5 units.

The volume of volume of sphere is given by :

$V=\dfrac{4}{3}\pi r^3$

$\pi=3.14\ , r=4.5$

So,

$V=\dfrac{4}{3}\times 3.14\times (4.5)^3$

Option C is correct.

(2) If we solve the plugged values, then we get :

$V=\dfrac{4}{3}\times 3.14\times (4.5)^3$

$V=381.5\ \text{units}^3$

Option C is correct.