Question

in triangle ABC AB = 2x+1, BC= x+1. area Is 60cm^2. angle B =90°. find it's perimeter

Answer 1

area=60
(1/2)(2x+1)(x+1)=60
(2x+1)(x+1)=120
2x^2+3x-119=0
solve quadratic equation and get x.. then put value in sides given... u will get sides.... then use Pythagoras theorem.. and sum up all sides to get perimeter