Question

The lengths of the three sides of a right triangle are in a.p. if the perimeter is 12cm .find its sides

Answer 1

let 3 sides=a,b,c
b-a=c-b,in a.p.

2b=a+c
b=a+c/2

perimeter=a+b+c=12
b=12-(a+c)
a+c/2=12-a+c
a+c=24-2a-2c
3a+3c=24
a+c=8

2b=8
b=4