Question

the dimensions of a cuboid are in the ratio 5:3:2 find its total surface area, given that its volume is 810 CM cube​

Answer 1

Answer:

558cm^2

Step-by-step explanation:

let the length, breadth and height be 5k, 3k and 2k.

Volume=810

or, l×b×h=810

or,5k×3k×2k=810

or,30k^3=810

or,k^3=27

or,k=3

So,

l=5k=5×3=15cm

b=3k=3×3=9cm

h=2k=2×3=6cm

Now,

TSA of cuboid=2(lb+bh+lh)

=2(15×9+9×6+15×6)

=2(135+54+90)

=2×279=558cm^2Ans

Answer 2

1st...part.. 2nd part...

Hence the surface area of cuboid is 558cm.cube..

hope it will be help you