Question

what is the area of an equilateral triangle with radius 15

Answer 1

do you mean equialateral triangle side = 15

Answer 2

if it is side and equals to 15,

formula for area of equilateral triangle = (side 1 )(side2)/2
= 15*15/2
= 112.5 unit square.


so area of equilateral triangle is 112.5 unit square.