Question

in isosceles triangle pqr, the length of pq is three times the length of pr. if the perimeter of the triangle is 35 cm, what is the length of pq?

Answer 1

Answer:

length of pq is 15 CM.

it's so simple

Answer 2

Given a issosceles triangle PQR whose one side PQ is three time the other side PR And its perimeter is 35 cm

So, let the side PR be X cm so the side PQ is equal to 3x cm ✓

As told it is issosceles triangle so the other side QR also equal to PR

A/Q

$\\ = > x + x + 3x = 35 \\ \\ = > 2x + 3x = 35 \\ \\ = > 5x = 35 \\ \\ = > x = \frac{35}{5} \\ \\ = > \boxed{\red{x = 7}}$

So the measure of the side PR is 7 cm so the measure of PQ Is 3x = 3×7= 21 cm