. If the area of an equilateral triangle is 81√3 cm2
, find its perimeter?
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Answered by
64
Area = 81√3
a²√(3)/4 = 81√3
a² = 81√3 * (4/√3)
a² = 81*4
a = √(81) * √(4) = 9 * 2 = 18 cm
Perimeter = 3a = 3*18 = 54 cm
a²√(3)/4 = 81√3
a² = 81√3 * (4/√3)
a² = 81*4
a = √(81) * √(4) = 9 * 2 = 18 cm
Perimeter = 3a = 3*18 = 54 cm
Prince2841:
nice
Answered by
42
hope help u see above Sol..
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