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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 ______.



Correct Answer
A

3 cm

Your Answer
B

cm

Correct Answer
C

2.5 cm

Your Answer
D

cm


Solution

The correct options are
A

3 cm


C

2.5 cm


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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