Question

Derive the formula:

1. Surface Area of cuboid

2. Curved Surface area of cylinder

3. Surface Area of a cube.

4. Total Surface Area of cylinder​

Answer 1

Answer:

1 . Surface Area of cuboid

= 2 ( lb + bh + lh )

2 . Curved Surface area if cylinder

= 2πrh

3 . Surface Area of Cube

= 6a2

= 6 ( a × a )

4 . Total Surface Area of Cylinder

= 2πr ( r + h )