Question

There are four blades of same size of a circular fan of radius 20cm, find the area of each blade​

Answer 1

Answer:

Hope it helps!!

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Answer 2

Answer:

628cm²

Step-by-step explanation:

$each \: angel \: = \frac{360}{8} = 45 \\ so \: area \: of \: 4 \: brades = 4 \times \frac{0}{360} \times \: \pi \: {r}^{2} \\ = 4 \times \frac{45}{360} \times r {20}^{2} \\ = 628 {cm}^{2}$