Question

Example 2. The height of a cylinder is 11
cm and its curved surface area is 968 cm. Find
the radius of cylinder.​

Answer 1

Answer:

14 cm

Explanation:

Height (h) of the cylinder= 11cm (Given)

Curved surface area of a cylinder= 2πrh

=968cm (Given)

Now we substitute the value of 'h' in the formula.

=> 2πrh = 968

=> 2πr x 11 = 968

=> 2 x 22/7 x r x 11 = 968

=> (2 x 22 x r x 11) / 7 = 968

=> 2 x 22 x r x 11 = 968 x 7

=> 22 x r x 11 = (968 x 7) / 2

=> r x 11 = (968 x 7) / 2 x 22

=> r = (968 x 7) / 2 x 22 x 11

Simplifying,

= (484 x 7) / 22 x 11 ( We divided 968 by 2)

=(22 x 7) / 11 ( We divided 484 by 22)

= 2 x 7 ( We divided 22 by 11)

= 14

Therefore, 14 cm is the radius of the cylinder.

Hope this helps...

Answer 2

Answer:

Ya

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