Volume of cylinder with radius 7cm and height 10cm is (pi=22/7):

Explanation

• Volume of a cylinder = πr²h = (22/7) × 7² × 10 = (22/7) × 49 × 10 = 1540.
• The unit is cubic centimetres, so the complete answer is 1540 cm³.
• Use π = 22/7 exactly as the question states. Using 3.14 gives 1538.6, which is close but not the listed value.
• Volume depends on the square of the radius, so a radius of 14 cm would give four times the volume, 6160 cm³.
• Doubling only the height to 20 cm simply doubles the volume to 3080 cm³.