Question 2 The perimeter of an equilateral triangle is 60m. The area is
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Solution
Let each side of an equilateral be x.
Then, perimeter of an equilateral triangle = 60m ∴x+x+x=60⇒3x=60⇒x=603=20m
Area of an equilateral triangle =√34(side)2=√34×20×20=100√3m2
Thus, the area of triangle is 100√3m2