Question

What is the area of this and why( how did you solve it)

Answer 1

The area of a circle is
`\pi` times the squared radius of the circle,


`A=\pi r^2`

You're given the diameter, which is twice the length of the radius,


`d=2r\implies r=\frac d2`

Plugging this into the area formula gives


`A=\pi\left(\frac d2\right)^2=\pi\frac{d^2}4`

The radius is 28 m, so the area is


`A=\pi\frac{(28\text{ m})^2}4=196\pi\approx615.75\text{ m}^2`