Question

please solve the above problem​

Answer 1

Answer:

53 cm

Step-by-step explanation:

Answer:

Radius = 53 cm

Step-by-step explanation:

Area of 2 hemisphere = Area of Sphere = 4πr²

Area of cylinder = 2πrl

Thus total area of the structure = 4πr²+2πrl = 2πr (2r + l)   .....(1)

Here Length of the cylinder = 14 cm, and total area of the structure = 240 π

And radius of hemisphere = radius of cylinder

Thus from equation 1 we get

240 π = 2πr (2r + l)

120 = 2r + l = 2r + 14

106 = 2r

r = 53

Answer 2

the answer is radius : 53