Question

the dimensions of rectangular box are in the ratio of 5:3:2 it's total surface area is 15.5sq. meter. the difference of two times of length and breadth is​

Answer 1

Area of rectangular box = 2(LB+BH+HL)

15.5=2(5x×3x+3x×2x+2x×5x)

15.5=2(15x+6x+10x)

15.5=2(31x)

15.5=62x

x=15.5/62

x=155/620

x=31/124

x=1/4

5x=5/4=1.25

3x=3/4=0.75

2x=2/4=0.5

∴ The dimensions are 1.25m , 0.75m , 0.5m.