A basketball is shaped like a hemisphere and has a radius of 7 cm. What is the curved surface area of the basketball?
Show answer & explanation
Correct answer: B
Explanation
Has been given :
Radius (r) = 7 cm
According to the formula:
Curved surface area of hemisphere = 2πr²
Area = 2 × (22/7) × 7²
= 2 × (22/7) × 49
= 44 × 7
= 308
308 cm²