An equilateral triangle is circumscribed inside a circle with a radius of 6. What is the area of the triangle?

Question

7104 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-06-02T09:41:47

Area of the equilateral triangle #color(green)(46.77#

Given triangle is equilateral and the radius of the circum circle is 6.

#a / sin A = b / sin B = c / sin C = 2R# where R is the radius of the circum circle.

#hat A = hat B = hat C = pi/3, a = b = c# being an equilateral triangle.

#:. a = b = c = 2R sin A = 2 * 6 * sin (pi/3) = 6sqrt3#

Area of triangle #A_t = (sqrt3/4) a^2 #

#A_t = (sqrt3/4) (6sqrt3)^2 = 27sqrt3 = color(green)(46.77#