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Question
The radius of a circle is 7ab – 7bc – 14ac. Find the circumference of the circle. `(pi = 22/7)`
Solution
We have, radius of the circle = 7ab – 7bc – 14ac = r ...[say]
We know that,
∵ The circumference of the circle = 2πr
= `2 xx 22/7 xx (7ab - 7bc - 14ac)`
= `44/7 xx 7(ab - bc - 2ac)`
= 44[ab – c(b + 2a)]
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