Question

The area of a circle inscribed in an equilateral triangle is 154 cm2. Find the perimeter of the triangle.



PLEASE HELP! :O

Answer 1

☺☺ HERE IS YOUR ANSWER ☺☺

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Area of circle = 154 cm^2

πr^2 = 154

22/7 × r^2 = 154

r^2 = 154 × 7/22

r^2 = 49

r = 7 cm

In ∆ORB, angle ORB = 90

Tan 30 = OR/RB

1/√3 = 7/RB

RB = 12.12cm

BC =2(RB)

BC = 24.24

perimeter of∆ABC = BC + AC + AB

= 24.24 + 24.24 + 24.24

= 72.74 cm


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THANKS..

Answer 2

72.74 is the answer of the question

I hope this will help w