Question

if the perimeter of a circular field is 242cm then find the area of the circular field.

Answer 1

2 × pi × r = 242
r = 77/2

area of circular field = pi× r square
= 22/7 ×77/2 ×77/2
= 4658.5 m square

Answer 2

Answer:

4658.5 square cm.

Step-by-step explanation:

Perimeter of circle = $2\pi r$

So, we are given that perimeter of circle is 242 cm.

So,$242=2\pi r$

$242=2\times \frac{22}{7} r$

$\frac{242\times 7}{2\times 22}=r$

$38.5=r$

Area of circular field = $\pi r^{2}$

                                  = $\frac{22}{7} \times (38.5)^{2}$

                                  = $4658.5$

Hence the area of circular field is 4658.5 square cm.