Question

solve this question anyone.And answer me immediately please

Answer 1

let the common multiple be x.
length =5x
breadth =3x
height =2x

vertical surface area =2 (l+b)×h
288=2 (5x +3x )2x
288=2×16x^2
288/2=16x^2
144/16=x^2
9=x^2
3=x
x=3cm

length =5x =15cm
breadth =3x =9cm
height=2x=6cm