Mathematics for IGCSE & O level - Mensuration (Section 14 - No. 2)
The volume of a cylinder is 400cm³. Its radius is 5.5cm. Calculate its height.
4.2 cm
4.5 cm
4.0 cm
4.1 cm
คำอธิบาย
Volume of cylinder = πr²h, h = Volume / πr² = 400 / (π * 5.5²) = 4.2 cm