Question

Find the third side of the triangle if its perimeter is 7p2q +13r
​

Answer 1

If the triangle is an equilateral triangle....

let one side =s

perimeter= 3s

3s = 7p2q +13r

s = (7p2q +13r)/3

Answer 2

find the third side of the triangle if it's perimeter is 7p²q+13r