Volume of Cylinder Applications to find Radius or Height

Q1. A pipe has a length of 22 cm, internal diameter 5 cm and thickness 0.5 cm. Find its volume.

Q2. Find the radius of the cylindrical can that can hold 2.5 L of paint. [1 litre = 1000 cm3]

 
Q3. This section of gutter, can hold 20 L of rainwater.
Find its length in meters to one decimal place.

Q4. The small cylinder can fill the big cylinder to a height of 5 cm.
Find the radius of the big cylinder.

[Mamkubwa]

Thanks. You have done it so well to understand.

[batulvohra]

Sir can you show area of trapezium and polygon