Question

capacity of a closed cylinder is 141.3cm
cube its height is 5 cm find its radius and total surface area​

Answer 1

Answer:

r = 3cm,, T.S.A. = 150.72cm^

Step-by-step explanation:

Ar. of cylinder = pi r^2 h

pi r^2 h = 141.3

r^2 h = 45(taking pi as 3.14)

r^2 = 45/5

r^2 = 9

r = 3cm

C.S.A of cylinder = 2 pi r h

6.28* 3* 5 = C.S.A

C.S.A = 94.2cm^2

2 pi r^2 = 56.52cm^2

T.S.A. = 94.20 + 56.52 = 150.72cm^2