Question

Four cubes of side 5 cm are joined end to end .find surface area of resultant cuboid

Answer 1

Answer:

450 cm^2

Step-by-step explanation:

There are 4 cubes so the length becomes 20 cm but both the height or the breadth don't change.

Surface area = 2(l×b+b×h+h×l)

= 2(20×5+5×5+20×5)

= 2(225)

= 450

Surface area = 450 cm^2