Thursday
May 23, 2013

# Homework Help: geometry

Posted by Piggy on Tuesday, May 8, 2012 at 12:49pm.

A 30-60-90 triangle is inscribed in a circle. The length of the hypotenuse is 12 inches. If a coin is tossed on the figure, what is the probability that the coin will land in the circle, but outside the triangle?

• geometry - Steve, Tuesday, May 8, 2012 at 1:55pm

if a right triangle is inscribed in a circle, the hypotenuse is a diameter of the circle.

area of circle = 36pi
area of triangle 6*6sqrt(3)

p(outside) = 1-sqrt(3)/pi = .45

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