Question

Two cubes each of edge 3cm are joined end to end. find surface area of resulting cuboid.

Answer 1

Each side of cube is 3cm

If two of them are joined, then the length of the resulting cuboid becomes 6 cm, height becomes 3 cm and breadth becomes 3 cm.

The formula for S.A of cuboid is 2(lb+bh+hl).

Plugging in the value gives 90cm^2

Answer 2

first you have to learn the formulas and then see the above answer and write it then once again you will do you at your own .

this is good for you.

Hope this will help you