Question

the area of circle is 394.24sq cm find its radius​

Answer 1

Area of a circleπr

2

⇒πr

2

=394.24sq.cm

⇒

7

22

×r

2

=394.24sq.cm

⇒r

2

=394.24×

22

7

=56cm

⇒r=

125.44‬

=11.2‬cm.

∴ Diameter=2r=2×11.2‬=22.4‬cm.

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Answer 2

Answer:

Given, area of circle is 394.24 sq. cm

we know that, Area of the circle =

$\pi \: r {}^{2}$

Explanation:

πr^2 = 394.24

22/7×r^2= 394.24

r^2= 394.24×7/22

r^2= 2759.68/22

r^2= 125.44

r = √125.44

r= 11.2 cm

This is your answer.

Thank you.