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OpenStudy (anonymous):
find the area of an equilateral triangle with sides 10 cm. ?
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OpenStudy (cwrw238):
the altitude = sqrt(10^2 - 5^2) = sqrt75 area = 0.5 * base* altitude = 0.5* 10 * sqrt75 = 43.3 sq cms
OpenStudy (anonymous):
are of equilateral triangle = s^2*(root3/4) = 10^2(root3/4) = 100(root3/4) = 25root3
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