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Question
The radius of the circle is 20% more than the height of the right angled triangle.The base of triangle is 36cm.If the area of the circle and triangle is equal,what will be the approximate area of the circle?
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Answer
let radius - r
radius 20% more than height
r=(100+20)/100 h
area of triangle= 1/2 h * b
b - 36
=1/2*h*36
=18h
area of circle=area of triangle
area of circle =18h
pi r^2=18h
22/7 r^2=18h
r=4.77
area of circle = 22/7*4.77*4.77
area of circle= 71.509
