Question

An isosceles triangle has a perimeter of 54cm. If the measure of unequal side is 21cm. What will be the measure of each of the two equal sides​

Answer 1

Answer:

Full explanation By written explanation

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perimeter of triangle = 2a+b

let the unequal side= x

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So,let us make equation first

$\pink\bigstar{\blue{\underline{\boxed{Equation}}}}$

perimeter of triangle = 2a+b

$54 = x+x+21 \\\\54-21 = x+x \\ \\33 = 2x \\\\\frac{33}{2} = x \\\\16.5 =x$

so unequal sides

= 16.5cm