Round off to the nearest centimetre the diameter of a tennis ball is 7 cm and diameter of a football is 22 cm. Complete the calculation to find the difference between the two volume to the nearest centimetre
The radius of the tennis ball is 3.5 cm (half of the diameter) and the radius of the football is 11 cm.
The formula for the volume of a sphere is V = (4/3)πr^3.
For the tennis ball:
V = (4/3)π(3.5^3)
V ≈ 179.6 cm^3
For the football:
V = (4/3)π(11^3)
V ≈ 5575.3 cm^3
The difference between the two volumes is:
5575.3 - 179.6 ≈ 5395.7 cm^3
Rounding to the nearest centimetre, the difference is approximately 5396 cm^3.