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Asked: 2021-08-02T21:20:55+05:30 In:

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. Q.10

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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. Q.10

Today i am solving ncert class 10 chapter areas related to circles its very hard to solve please give me the solution of exercise 12.2 question number 10 . find the best solution of this question. 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.

areas related to circles ncertbest math ncert solutionexercise 12.2 ncertncert class 10th solution
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    1. Guru

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

      So, the area of the circle (A) = πr2 = (22/7)×(45)2 =6364.29 cm2

      Total number of ribs (n) = 8

      ∴ The area between the two consecutive ribs of the umbrella = A/n

      6364.29/8 cm2

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

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