Question

The radius of a sphere is 3.5 CM. Find its surface area and volume.

Answer 1

Given:
r=3.5cm
To find:
Surface area and volume of sphere

Solution:
Surface area of sphere = 4π r^2
=(4×22×3.5×3.5)/7
=88×12.25 /7
=154cm^2

Volume of the sphere: 4/3πr^3
=4/3 ×22/7×3.5×3.5×3.5
=3773/21
=179.6cm^2

Answer 2

Answer:

The surface area of sphere is    $153.86 cm^2$  and the Volume is   $179.503 cm^3$

Step-by-step explanation:

Radius of sphere = 3.5 cm

Volume of Sphere = $\frac{4}{3} \pi r^{3}$

                               = $\frac{4}{3} \times 3.14 \times (3.5)^{3}$

                               = $179.503 cm^3$

Surface area of sphere = $4\pi r^{2}$

                                       = $4\times 3.14 \times (3.5)^{2}$

                                       = $153.86 cm^2$

Hence the surface area of sphere is    $153.86 cm^2$  and the Volume is   $179.503 cm^3$