The perimeter of a triangle with 3 equal sides is times its side.

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Solution

The correct option is A 3
We are given a triangle with three equal sides. Let the length of each side be $s$ units.

Then, the perimeter of the triangle is the sum of the lengths of its sides.

$∴ Perimeter = s + s + s = 3 s$

That is, the perimeter of the triangle is 3 times the length of its side.

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Question 90

Solve the following:

Two equal sides of a triangle are each 4 m less than three times the third side. Find the dimensions of the triangle, if its perimeter is 55m.

\frac{1}{2}

The area of an equilateral tringle is $144 \sqrt{3} c m^{2}$ ; find its perimeter.

Area of an equilateral triangle

$= \frac{\sqrt{3}}{4} \times (s i d e)^{2}$ and its perimeter $= 3 \times$ side

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