Mathematics for IGCSE & O level - Mensuration (Section 9 - No. 14)
A spherical ball has a curved surface area of 572 cm². Calculate its volume.
1200 cm³
1100 cm³
1000 cm³
999 cm³
คำอธิบาย
Surface area of a sphere = 4πr², r = √(Surface area/4π) = 6cm, Volume of sphere = 4/3πr³ = 905cm³