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An umbrella has 8 ribs which are equally spaced,assuming that the umbrella to be a flat circle of radius 45 cm,find the area between two consecutive ribs.



Area of the circle (umbrella)= pi*r*r
                                       = 3.14*45*45
                                       = 6358.5
as there are 8 parts we will divide the area of the circle by 8.
           794.8125 sq.cm
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