Question

in an isosceles right-angled triangle,the measure of the hypotenuse is 21cm.the perimeter of the triangle is 81cm.what are the measure of the remaining sides?

Answer 1

hello!

Let the two equal sides be x cm

Since,
it is an isosceles triangle two sides are equal.

Perimeter=sum of all three sides

therefore,
x+x+21=81
=>2x+21=81
=>2x=60
=>x=30

The remaining two sides measure 30cm each.

hope it helps... :)

Answer 2

We can let the two equal sides be x cm
Two sides are equal as it is an isosceles triangle
Acc,
x+x+21=81
=>2x+21=81
=>2x=60
=>x=30
∴ the other two sides are 30 cm