Question

Find area of circle if r=7cm

Answer 1

Given the radius of the circle r = 7cm

Now, the area of the circle is = π × r^2

= 22/7 × 7^2

= 154 cm^2

Hope it's helpful... ^_^

Answer 2

Before, finding the answer. Let's find out how we can find the answer.

• In this question, we are asked to find the Area. So to find the area of the circle, we must use the formula of :

$\boxed{\sf Area \: of \: Cirlce = \pi r^2}$

• Where we have to multiply pi, twice of radius together.
• And here, we are taking pi as :

$\sf \pi = \dfrac{22}{7}$

___________________________

Given :

• Radius = 7 cm

To find :

• Area of circle

Solution :

We know that,

$\sf \dasharrow Area \: of \: Circle = \pi r^2$

                          $\sf = \dfrac{22}{7} \times (7)^2$

                          $\sf = \dfrac{22}{7} \times 49 \: [7 \times 7 = 49]$

                          $\sf = \dfrac{22 \times 49 }{7}$

                          $\sf = \dfrac{1078}{7}$

                          $\sf = 154 cm^2$

Therefore, the Area of the circle is 154 cm².