Question

3.
3. Find the surface area of a sphere whose volume is 606.375 m .
4. The surface area of a sphere is 394.24 m². Find its radius and vc​

Answer 1

3) V = 4/3πr³

r³ = V × 3/4π

r³ = 606.375 ×3/4 × 7/22

r³ = 144.7

r = 5.25 cm

A = 4πr²

A = 4 × 5.25 × 5.25 × 22/7

A = 346.5 m²