Question

Find the radius of the circle if its area is 154 m².​

Answer 1

As per the data given in the question,

We have to determine the radius of the circle

As per question,

It is given that,

Area or circle $=154\:m^2$

As we know that,

The formula for determining the area of circle is $=\Pi r^2$

So, now putting the value in above formula,

We will get,

$\Pi r^2 = 154\\=>r^2 = \frac{154}{\Pi}\\=>r^2=\frac{154}{\frac{22}{7}}\\=>r^2=49\\=>r = {\sqrt{49}}\\=>r = 7\:cm$

So, the value of radius of circle will be 7 cm

Answer 2

• As per the data given in the question, we have to determine the radius of the circle.

       Given data:- Area=$154m^{2}.$

       To find:- The radius

       Solution:-

• We know that the area of a circle is $\pi r^{2}.$

• So, we have to use the area formula of the circle to find out the radius for the circle.

      Therefore,

        $\Rightarrow \pi r^{2}=154\\\Rightarrow r^{2}=\frac{154\times7}{22}\\\Rightarrow r=\sqrt{49}=7m.$

 Hence, the radius of circle is $7m.$