Question

23.The base area of a right circular cylinder is 16Π cm³. Its height is 5 cm. Its curved surface area is *

(A) 40π cm²

(B) 30π cm²

(C) 20π cm²

(D) 10π cm²​

Answer 1

Answer:

CSA = 40π

Step-by-step explanation:

given: A = 16π cm² , h = 5 cm

to find : CSA

CSA = 2πrh

πr² = 16π

=> r² = 16

=> r = 4 cm

therefore CSA = 2πrh

=> CSA = 2*π*4*5

=> CSA= 40π