The surface area of a spherical ball is 1386 cm2. What will be its volume?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 4851 cm3.
Surface Area of a Sphere = 4πr2
1386 = 4 × 22/7 × r2
⇒ r2 = 1386 × 7/88
⇒ r2 = 110.25
⇒ r = 10.5 cm
Volume of Sphere = 4/3 × π × r3
⇒4/3 × 22/7 ×10.53
⇒101871/21 = 4,851
Hence, the volume of the sphere is 4851 cm3.