Question

the circumfrence of a circle is 132 find the area of the circle

Answer 1

hiii!!!

here's ur answer...

circumference of the circle=132cm

2πr=132cm

2×22/7×r=132cm

44/7×r=132cm

r=132/1×7/44

r=21cm

hence, the radius of the circle is 21cm

area of the circle=πr²

=22/7×21×21

=22×3×21

=1386cm²

hope this helps...

Answer 2

Given -

Circumference of circle is 132 unit

To find -

The area of circle

Solution -

As we know that,

Circumference of circle = $2 \times \pi \times r$

Put the given values in these formula we get

$132 = 2\pi \times r$

$\frac{132}{2\pi} = r$

$\frac{66}{\pi} = r$

The value of π is 3.14 .

$\frac{66}{3.14} = r$

$r = 21.01$

So,

Radius (r) is 21.01 unit

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

Put the value of r we get

Area of circle = $\pi \times {21.01}^{2}$

Square means multiply the given values with itself twice.

Square of 21.01 is 441.42

Area of circle = $\pi \times 441.42$

The value of π is 3.14.

Area of circle = $3.14 \times 441.42$

Area of circle = $1386.05$

Hence,

Area of circle is 1386.05 ${unit}^{2}$