Question

the surface area of a sphere is 1018 257 CM square what is its volume​

Answer 1

Answer:

Step-by-step explanation:

Given surface area of the sphere = 1018  2/7 cm²

⇒ 4πr² = 1018  2/7

⇒ 4 × 22/7 r² = 7128/7

⇒ 88/7× r² = 7128/7

⇒   r² = (7128/7) × (7/88)

⇒   r² = 7128/88⇒   r² = 81

⇒   r = √81 = 9

∴Radius = 9cm

Volume of the sphere = 4/3πr³

= 4/3  ×  22/7 × 9³

=88/21 × 729

=64152/21

=3054.9 cm³