a solid is in the form of a cylinder with hemispherical ends. the total height of the solid is 20 cm and the diameter of the cylinder is 7 cm .find the total volume of the solid.
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Diameter of the cylinder = 7 cm
Therefore, Radius of the cylinder
Total height of the solid = 19 cm
Therefore, Height of the cylindrical portion= 19 - 7
= 12 cm
(1 mark)
Therefore,
Volume of the solid = Volume of the cylindrical portion + Volume of the two hemispherical ends
= Total surface area of the solid = Curved surface area of the cylinder + Curved surface area of two hemispherical ends
= 22 19
= 418 cm²
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