Question

*What is the area of circle having circumference 20 cm?*

1️⃣ 3.14 sqcm
2️⃣ 314 sqcm
3️⃣ 413 sqcm
4️⃣ 10 cm​

Answer 1

Step-by-step explanation:

Circumference is also Known as Diameter of the circle therefore, Radius is the half of Diameter.

20/2=10 cm

Answer 2

Answer:

Area of circle is 31.76 sq cm

Step-by-step explanation:

Given that

Circumference of circle is 20cm

To find

Area of circle

Solution

As we know that

$circumference \: of \: circle = 2\pi \times radius$

hence

$radius = \frac{circumference}{2\pi}$

put

$\pi = 3.14$

hence

$radius = \frac{20}{2 \times 3.14} = 3.18cm$

now

$area \: of \: circle = \pi \times {radius}^{2}$

$area \: of \: circle = 3.14 \times {3.18}^{2}$

$area \: of \: circle = 31.76 {cm}^{2}$