Question

Area of a circle with a diameter of 63

Answer 1

That is a question about circle area.

To calculate the area of a circle, we multiplicate the constant pi (
`\pi \approx 3.14`) by the radius (of the circle) squared. The expression represents that is below:

`\boxed{A_c = \pi * r^2}`

In our problem, we don't know what is the circle raius, but we know the diameter. In a circle, the diameter is equal the double radius.

So, to know the radius of our circle, we divided the diameter by 2. Consequently, the raius of our circle is
`63 /2 = 31.5`.

Now, we should use the expression and we will find the area:

`A_c = 3.14* 31.5^2\\A_c = 3.14* 31.5* 31.5\\A_c =3.14* 992.25\\A_c = 3115.665`

Therefore, the area of a circle with a diameter of 63 is approximately 3115.665.

I hope I've helped. :D

Enjoy your studies! \o/