find the area of an equilateral triangle of side 20 metre
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area of equilateral triangle is underoot of 3by 4 ×side^2
so
1.732/4 ×20×20
1.732×100
=173.2 or 100root3
so
1.732/4 ×20×20
1.732×100
=173.2 or 100root3
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