Question

Find the area of the circle if the radius is 20​

Answer 1

Area is 1256units²

★Area of a circle(A) = πr²

A = 3.14×(20)²

A = 3.14×400

A = 1256units²

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Answer 2

Answer:

Area of circle is 1257.14 ${unit}^{2}$

Step-by-step explanation:

Given -

Radius of circle is 20 unit

To find -

The Area of circle

Solution -

As we know that,

Area of circle = $\pi {r}^{2}$

Where, r is radius of circle

Put the value of r we get

Area of circle = $\pi \times {20}^{2}$

Square means multiply the given values with itself twice.

${20}^{2} = 20\times 20= 400$

Square of 20 is 400

Area of circle = $\pi \times 400$

The value of π is $\frac{22}{7}$

Area of circle = $\frac{22}{7} \times 400$

Area of circle = 1257.14

Hence,

Area of circle is 1257.14 ${unit}^{2}$