Question

the radius of a circle is 28 cm find its area​

Answer 1

Answer:

r = 28cm

π = 22/7

area = πr²

area = 22/7 x 28 x 28

area = 22/7 x 784

area = 22 x 112

area = 2464 cm

Answer 2

The area of the circle is 2464 cm²

Given :

The radius of a circle is 28 cm

To find :

The area of the circle

Formula :

Area of a circle of radius r unit is πr² unit²

Solution :

Step 1 of 2 :

Write down the radius of the circle

By the given condition

Radius of the circle = r = 28 cm

Step 2 of 2 :

Find area of the circle

The area of the circle

$\displaystyle \sf{ = \pi {r}^{2} \: \: {cm}^{2} }$

$\displaystyle \sf{ = \frac{22}{7} \times {(28)}^{2} } \: \: {cm}^{2}$

$\displaystyle \sf{ = \frac{22}{7} \times 28 \times 28 } \: \: {cm}^{2}$

$\displaystyle \sf{ = 88 \times 28 } \: \: {cm}^{2}$

$\displaystyle \sf{ = 2464 } \: \: {cm}^{2}$

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