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, 1.0 cm, 1.5 cm, 2.0 cm, ... as
shown in figure. What is the total length of such a
spiral made up of thirteen consecutive semicircles ?
$(tack \: \pi \: as \: \frac{22}{7}$

[Hint : Length of successive semicircles is ,
L1,L2,L3,L4 ... with centres at A, B,
A, B, ..., respectively.]​
only by using the formula ==

s= n/2(2x+(n-1)d)

Answer 1

Above Attached, I Hope You Satisfied With My Answer.

If You Satisfied With My Answer Then Please Mark Me As Brainliest.