Math, asked by aaryan9871, 10 months ago

The tsa of a solid right circular cylinder is 231cm². Its csa is 2/3 if the tsa. Find the radius and height of the cylinder. bhai dedo answer​

Answers

Answered by avni793
4

The total area of cylinder = 2πrh+2πr^2

curved surface area = 2πrh

2/3 * (2πrh +2πr^2) = 2πrh

2πr (2/3*h+r) =2πrh

2/3 * (h+r) =h

2h+ 2r = 3h

h =2r

so,

2πrh +2πr^2 = 231

2πr(h+r) =231

2πr *3r =231

r=3.5cm

and, h =2r

so height = 7cm

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