# pythagoream theroem

how do you find the height of a triangle that is 20cm. on each side

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asked by briana
1. So you have an equilateral triangle with sides 20 cm?

draw in the height, it will right-bisect the base, call the height h
Now look at the right angled triangle with sides
h, 10, and hypotenuse 20
h^2 + 10^2 = 20^2
h^2 = 300
h = √300 or 10√3

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posted by Reiny

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