Question

triangle ABC ~ triangle PQR . The length of sides of triangle ABC are 5,6,7 units. If perimeter of triangle PQR is 360 units, then find length of side of triangle PQR.​

Answer 1

The length of sides of triangle ABC are 5,6,7 units and perimeter of triangle PQR is 360 units.

then,

$5x + 6x + 7x = 360 \\ 18x = 360 \\ x = 20$

Then the length of side of triangle

$pq = 5x = 100 \\ qr = 6x = 120 \\ pr = 7x = 140$