The volume of a cylinder is 211.2 cm³ and its height is 4.2 cm, find the diameter of its base.
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Answer:
8 cm
Step-by-step explanation:
Volume of cylinder = 211.2 cm^3 and height = 4.2 cm.
=> 211.2 = πr²h
=> 211.2 = (22/7) * r² * 4.2
=> 211.2 = 22 * r² * 0.6
=> 211.2 = r² * 13.2
=> 16 = r²
=> r = 4
Radius = 4 cm.
Diameter = 2 * 4 = 8 cm.
Hence, diameter of its base = 8 cm.
#Hope my answer helped you!
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