Question

find the height of a cylinder whose radius and lateral surface are 14 cm and 440 cm² respectively​

Answer 1

Answer:

Radius ‘r’ = 14cm

Let height be h.

Lateral Surface Area = 440 cm²
=> 2πrh = 440
=> 2 x 22/7 x 14 x h = 440
=> 2 x 22 x 2 x h = 440
=> 88h = 440
=> h = 440/88
=> h = 5cm

Therefore, the height of a cylinder is 5cm.

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Answer 2

Answer:

h = 5 cm

Step-by-step explanation:

We have,

Radius = 14

L.S.A = 440 cm²

L.S.A of a Cylinder = 2πrh

                     440    =  2 * 22/7 * 14 * h

                     440    = 44 * 2 *h   ( Cancel 7 and 14 )

                           10 = 2h

                            h = 5

Therefore  h = 5 cm