Question

The sides of a right angle triangle containing the right angle are 5x cm and 3X-1 centimeter if its area is 60 cm find its perimeter

Answer 1

Area = b xh/2

5x(3x-l)/2 = 60

15x^2-5x=120

3x^2-x=24

3x^2-x-24 =o

.solving->x=3

sides 5x=15cm

3x-l=9-l=8 cm

hypoten use=v15^2+8^2 =v 289=17cm

Perimeter=15+8+17=40cm