Problem: The area of a circle inscribed in an equilateral triangle is 48Ï€. The perimeter of this triangle is:
Answer Choices:
A. 723​
B. 483​
C. 36
D. 24
E. 72
Solution:
For the inscribed circle
r=h/3=s3​/6.p=3s=63​r=(63​)(43​)=72.
( A=πr2,r=48​=43​.)