Question

I) The circumference of a circle is 4π. Find the area of the circle.

Answer 1

Circumference of a circle is given as 4π.

✳ Formula for Circumference of a circle = 2πr.

⟹

2πr = 4π

⟹

\sf r = \dfrac{4\pi }{2\pi }r=

2π

4π

⟹

r = 2 units (∵ We are not provided with the unit).

AREA OF THE CIRCLE

Area of a circle = πr²

Now,let us substitute the values of r = 2 and π = 3.14 in the above equation.

∴Area of the circle = 3.14 × 2²

⟹

Area of the circle = 3.14 × 4

⟹

Area of the circle = 12.56 Square Unit (∵ We are not provided with the unit).

Answer 2

Answer:-

Area of the Circle of circumference  4π = 12.56 Square Unit.

SOLUTION

Here,

Circumference of a circle is given as 4π.

✳ Formula for Circumference of a circle = 2πr.

$\implies$

2πr = 4π

$\implies$

$\sf r = \dfrac{4\pi }{2\pi }$

$\implies$

r = 2 units (∵ We are not provided with the unit).

AREA OF THE CIRCLE

Area of a circle = πr²

Now,let us substitute the values of r = 2 and π = 3.14 in the above equation.

∴Area of the circle = 3.14 × 2²

$\implies$

Area of the circle = 3.14 × 4

$\implies$

Area of the circle = 12.56 Square Unit (∵ We are not provided with the unit).