Question

. The dimensions of a cuboid are in the ratio 5: 3:2. Find its total surface area,
given that its volume is 810 cm3.
​

Answer 1

Answer:162 cm²

Step-by-step explanation:

Let the dimensions be 5x,3x and 2x.

A.T.Q

Volume=l*b*h

810 cm³=5x*3x*2x

810 cm³=30x³

27 cm³=x³

x=3 cm

L=15 cm

B=9 cm

H=6 cm

TSA=2(lb+bh+no)

=2(15*3+3*2+2*15)

=2(45+6+30)

=2*81

=162 cm²