A spiral is made up of successive semicircles with centres alternate A and B starting with Centre A period of radius 0.5 cm, 1.0cm, 1.5 cm, 2.0 cm .... shown in the figure 5.4 what is the total length of spiral made up of 13 consecutive semicircles Taken 5 equal to 22 by 7 into length of successive semicircles is L1, L2, L3, l4 ,..... which centres at a ,b ,a ,b... respectively
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The fig is not given still it can be as
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