Question

Find the radius of a circle ,if its area is 7 km

Answer 1

Answer:

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Step-by-step explanation:

area of the circle is 7km

= pie x r² = 7000 m

= 22/ 7 x r² =7000

= r² = 7000 x 7/22

r² = 2229.2

r = √2229.2

r = 47.2

r = 47m

Answer 2

Answer:

r=47.9 m

Step-by-step explanation:

Let radius of circle be r.

7km=area of circle

7000m=(22/7)×r²

r²=7000×7/22

r=47.9m