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18. A spiral is made up of successive semicircles, with centres alternately at A and Bstarting with centre at A. of radii 0.5 cm. 1.0 cm. 1.5 cm. 20 cm.... as shown inFig. 5.4. What is the total length of such a spiral made up of thirteen consecutivesemicircles? (Take 22​

Answer»

ANSWER:

answer = 143 cm

Step-by-step explanation:

SOLVE by AP taking circumferences as 0.5pi, PI, 1.5pi ETC



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