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.​

Answer 1

$\huge \underline \mathbb {SOLUTION:-}$

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

So, the area of the circle (A) = π r²

= 22/7 × (45)²

= 6364.29 cm²

Total number of ribs (n) = 8

Therefore:

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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Answer 2

Answer:

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