Question

circumference of a circle is 33 cm find its area​

Answer 1

circumference of the circle=2πr

2πr=33

2*22/7*r=33

r=33*7/2*22

r=5.25 cm

NOW,

area of circle=πr^2

2*22/7*525/100*525/100

12127500/7*100*100

1732500/10000

173.25 cm^2 is the answer

Answer 2

The area of the circle is 86.625 square centimeter.

Step-by-step explanation:

Given : Circumference of a circle is 33 cm.

To find : Its area ?

Solution :

The circumference of the circle is ​$C=2\pi r$

Here, C=33 cm

$33=2\times \frac{22}{7}\times r$

$r=\frac{33\times 7}{2\times 22}$

$r=5.25\ cm$

The area of the circle is $A=\pi r^2$

$A=\frac{22}{7}\times (5.25)^2$

$A=\frac{22}{7}\times 27.5625$

$A=86.625\ cm^2$

The area of the circle is 86.625 square centimeter.

#Learn more

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