Question

The dimensions of a cuboid are in ratio 5:2:1. It’s volume is 1250 cubic metres. What is its total surface area.

Answer 1

volume of cuboid=l*b*h

1250=5x*2x*x

1250=10x^3

x^3=1250/10

x^3=125

x=5m

l=5*5=25m

b=2*5=10m

h=1*5=5m

total surfacd area of cuboid=2(lb+bh+hl)

=2(25*10+10*5+5*25)

=2(250+50+125)

=2(425)

=850 cubic metre