Question

18. 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. 1.0 cm. 1.5 cm. 20 cm.... as shown in
Fig. 5.4. What is the total length of such a spiral made up of thirteen consecutive
semicircles? (Take 22​

Answer 1

Answer:

answer = 143 cm

Step-by-step explanation:

solve by AP taking circumferences as 0.5pi, pi, 1.5pi etc