Question

find the area of an equilateral triangle having the length of a side equals 10 .

Answer 1

Area of equilateral triangle=under root3a/4

=underroot 3*10/4

=4.3301

Answer 2

side (s) = 10 cm

area of an equilateral triangle = (√3/4)s² = (√3/4)10² =  √3*100/4 = 25√3 cm²

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