Question

The circumference of a circle is 17.6cm. Find the area of the circle . ​

Answer 1

Answer:

circumference = 17.6cm

2πr=17.6

r=17.6 × 7/ 22×2

r=2.8

area=πr²

area= 22/7×2.8×2.8

area is 24.64cm ²

Answer 2

Given -

Circumference of circle is 17.6 cm

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

$17.6 = 2\pi \times r\\\frac{17.6}{2\pi} = r\\\frac{8.8}{\pi} = r$

The value of π is 3.14 .

$\frac{8.8}{3.14} = rr = 2.8$

So,

Radius (r) is 2.8 cm.

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

Put the value of r we get

Area of circle = $\pi \times {2.8}^{2}$

Square means multiply the given values with itself twice.

Square of 2.8 is 7.84

Area of circle = $\pi \times 7.84$

The value of π is 3.14.

Area of circle = $3.14 \times 7.84$

Area of circle = $24.61$

Hence,

Area of circle is 24.61 ${cm}^{2}$