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Break Through The Circle (Brain Teaser)

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Break Through The Circle

Q. Geometry is sometimes a brain twister, too. But, this time it is not. Prem was doing his home work. With a radius of 20 cm he drew a circle. He then drew 7 lines inside with the help of a foot-rule.

Can you tell in how many minimum and maximum divisions was the circle divided by these lines?

A. The circle can be divided in:

Minimum 8 and maximum 29 parts.

Note: For minimum formula = No. of lines + 1.
For maximum formula = Total of all lines (from 1 to last number) + 1.