Asked by Precious

If a figure shows a cylindrical casting of height 8cm and external and internal diameters 9cm and 5cm respectively. Calculate the volume of metal in the casting
Answered by Reiny
Imagine a solid cylinder with diameter of 9 cm
Its volume would be π(4.5)^2 (8)
Now remove a cylinder with diameter 5 cm
......
Answered by Godzilla
Impossible
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