Question

Find the area of a circle of radius 21 cm.
(π= 22/7)

Answer 1

Step-by-step explanation:

22/7×21 square

443.142

Answer 2

Answer:

$1386 cm^2$ is the area of the given circle whose radius is 21cm.

Step-by-step explanation:

Explanation:

Given in the question that,  the radius of a circle = 21cm

According to the question we need to find the area of a circle whose radius is 21cm.

As we know that the, formula to find the area of a circle = $\pi r^2$

So, area of circle of radius(21cm) = $\pi$$(21)^2$

Where  the value of $\pi$ is 3.14.

⇒Area of circle = (3.14)× 21 × 21=1386$cm^2$

Final answer:

Hence,  area of  the given circle  is 1386$cm^2$

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