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Question from shreyaarora, a student:

if the area of on equilateral triangle is 24/3cm,then what is its perimeter

Hi Shreyaarora,

Suppose each side of the triangle is $2x$ centimeters long.

triangle

What is the height of the triangle? (Ask Pythagoras.) What is an expression for the area of the triangle. But you know the area of the triangle. Solve for $x.$

Penny

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