Question

1.A right angled triangle ABC with sides 3cm,4cm and 5cm is revolved about the side of 4cm. Find the volume of the solid generated.Also find the total surface area of the solid.​
2. A square piece of paper of side 22cmis rolled to form a cylinder. Find the volume of the solid generated. Also,find the total surface area of the solid.

please mates let me know the answer fast

Answer 1

Step-by-step explanation:

Here 5cm side is slant hieght

4cm side is height

3cm side is radius

Volume=22×3×3×4÷21

=37.714