Question

9. The C.S.A of a right circular cylinder of height 14 cm is 88 cm find the diameter of the base of the cylinder​

Answer 1

Answer:

Given , The height of cylinder =14cm

and , the curved surface area of cylinder =88cm

2

we know that ,

the curved surface area of cylinder =2πrh

and 2r=d

here , r=radius of cylinder , d=diameter of cylinder and h=height of cylinder

so , the curved surface area of cylinder =πdh =88cm

2

π×d×14=88

7

22

×d×14=88

d=2cm

so, the diameter of the cylinder is 2cm

.

.

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Answer 2

SOLUTION :

Given

The height of cylinder =14cm

and , the curved surface area of cylinder =88cm 2

we know that :

the curved surface area of cylinder =2πrh

and 2r=d

here , r=radius of cylinder

d=diameter of cylinder and,

h=height of cylinder

so .the curved surface area of cylinder =πdh =88cm 2

π×d×14=88

22

── ×d×14=88

7

d=2cm

so, the diameter of the cylinder is 2cm.