An umbrella has 8 ribs which are equally spaced (see Fig. 12.13). Assuming umbrella to be a flat circle of radius 45 cm, find the area between the two consecutive ribs of the umbrella.

Asked by Pragya Singh | 1 year ago |  71

##### Solution :-

The radius (r) of the umbrella when flat = 45 cm

So, the area of the circle (A) = πr2 = ($$\dfrac{22}{7}$$)×(45)=6364.29 cm2

Total number of ribs (n) = 8

The area between the two consecutive ribs of the umbrella = $$\dfrac{A}{n}$$

$$\dfrac{6364.29}{8}$$ cm2

Or, The area between the two consecutive ribs of the umbrella = 795.5 cm2

Answered by Abhisek | 1 year ago

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