Question

A spiral is made up of successive semicircles, with centres alternately
at A and B, starting with centre at A, of radii 0.5 cm, 1 cm, 1.5 cm,
2 cm, ... as shown in the given figure. What is the total length of
such a spiral made up of 13 consecutive semicircles? (Take
$\pi = 22 \div 7$
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Answer 1

Answer:

Explanation:hope this will help you