The total surface area of a hemisphere is 27 \(\pi \) cm², then the radius of the base of the hemisphere is -
Answer & explanation
Correct answer: option 4
T.S.A. of a hemisphere = 3\(\pi \)r2
⇒ 27\(\pi \) = 3\(\pi \)r2
⇒ r2 = 9
⇒ r = 3 cm
The total surface area of a hemisphere is 27 \(\pi \) cm², then the radius of the base of the hemisphere is -
Correct answer: option 4
T.S.A. of a hemisphere = 3\(\pi \)r2
⇒ 27\(\pi \) = 3\(\pi \)r2
⇒ r2 = 9
⇒ r = 3 cm