Question

Find the volume of a sphere of surface area 100 cm².

Answer 1

≈ 94 cm³

-----------------------

Surface area of a sphere:

• A = 4πr²

Find the radius:

• 100 = 4πr²
• πr² = 25
• r² = 25/π
• r = 5/√π
• r = 2.82 cm

Find the volume:

• V = 4/3πr³
• V = 4/3*π*2.82³ ≈ 94 cm³