Question
The volume of a cylinder is 231 cm3 and its height is 6 cm. A ball will fit inside the cylinder if its radius is ______.
Answer: Option A
:
A and C
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A and C
Volume of cylinder =π×r2×h
⇒231=227×r2×6
⇒r2=231×722×16
⇒r2=12.25
⇒r=3.5
So, a ball will fit inside the cylinder if its radius is less than or equal to 3.5 cm.
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