Question

The radius of a
circular field is 21m. find its
perimeter & area.
(use pie =22/7​

Answer 1

Answer:

perimeter = 132 , Area = 1386

Step-by-step explanation:

given :-

radius of circular field = 21 mtr

π = 22/7

To find out :-

Area and perimeter of the field

Solution:-

we know area of the circle = πr²

=> 22/7×21×21

=> 22×3×21

=> 1386 m² is area of the field

now perimeter

=> 2πr

=> 2×22/7×21

=> 2×22×3

=> 132 mtr is perimeter

Answer 2

$\huge \bigstar$$\huge\bold{\mathtt{\purple{A{\pink{N{\green{S{\blue{W{\red{E{\orange{R}}}}}}}}}}}}}$$\huge \Rightarrow$

$\bold {To:/Find:}$

To find perimeter (circumference) & area of cirlcle with radius 21 meter.

___________________________________

$\bold {Solution:}$

for perimeter of circle

Circumference = $2πr$

= $2 \times \frac{22}{7} \times 21$

= 132m

______________________________

$\bold {Solution}$

for area of circle

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

= $\frac{22}{7} \times {21}^{2}$

= 1386sqm.

The perimeter of circle is 132m and area of circle is 1386sqm.