A cylinder is a 3D shape with two circular faces and one curved surface. Its volume is the area of the circular base (πr²) multiplied by the height. Think of it as stacking circles on top of each other.
A can has radius 3 cm and height 10 cm. What is its volume?
r = 3 cm h = 10 cmr² = 9 cm²V = π × 9 × 10 = 90π