Question 78

What is the area (in sq cm) of a circle whose circumference is 22 cm?

Name: What is the area (in sq cm) of a circle whose circumference is 22 cm?
Uploaded: April 1, 2021, 9:08 a.m.
Duration: 48 s
Description: What is the area (in sq cm) of a circle whose circumference is 22 cm?

Solution

$$2\pi r=22$$

$$2 \times \frac{22}{7} \times r=22$$

$$r=3.5cm$$

$$Area = \pi r^{2} = \frac{22}{7} \times 3.5 \times 3.5 = 38.5 cm^{2}$$

so the answer is option B.

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What is the area (in sq cm) of a circle whose circumference is 22 cm?

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