If the perimeter of an equilateral triangle is 60cm, then find its area.
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If it's perimeter is 60 cm.
It's each side = 60/3 = 20cm.
Area of an equilateral triangle=√(3/4)a^2
√(3/4)×20^2
√3/2×20×20
√3×10×20
1.732×10×20 = 346.4
It's each side = 60/3 = 20cm.
Area of an equilateral triangle=√(3/4)a^2
√(3/4)×20^2
√3/2×20×20
√3×10×20
1.732×10×20 = 346.4
surbhichandhana:
thank you
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