Question

Find the area. Leave answer in terms of pi.A) 91 kmC) 647 kmB) 167 kmD) 257 km

Answer 1

The answer is D) 257 because you need to take the pi symbol out after you find the answer so it would be D) 257.

Answer 2

The figure we have is a circle and we need to find its area.

To find the area of any circle we use the following formula:

`A=\pi r^2`

Where A is the area, and r is the radius of the circle.

Step 1. Identify the radius of the circle.

The radius is a line that goes from the center of the circle to a point in the circumference. In this case, the radius is shown in red in the following diagram:

Thus:

`r=5kn`

Step 2. Once we know the radius, we can substitute its value into the area formula:

`A=\pi r^2`

substituting r=5km:

`A=\pi(5km)^2`

And we solve the operations since 5^2 is equal to 25:

`A=25\pi km^2`

The indications are to leave the answer in terms of pi, which means that we don't substitute the value of pi in the answer, thus, that is the final answer.

Answer:

`D)\text{ }25\pi km^2`