Question

find area of circle whose circumefrence is 22​

Answer 1

⭐Ⓢⓞⓛⓤⓣⓘⓞⓝ ⭐

➡ Circumference of a circle = 2πr

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

➡ So area would be =πr^2

$= \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2} \\ \\ = \frac{77}{2} = 38.5$

ℏ✺℘ḙ !т ℏḙℓ℘ṧ ❤

Answer 2

$A=38.48\ unit^2$ is the area of the given circle

Explanation:

Given:

circumference of the circle, $c=22$

we know that the circumference of a circle is given by:

$c=2\pi.r$

$22=2\times \pi\times r$

$r=3.5$

Now as we know that the area of circle is given as:

$A=\pi.r^2$

$A=\pi\times 3.5^2$

$A=38.48\ unit^2$

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TOPIC: geometry of a circle

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