Question

A team measurred the distance a wheel rolled and found it to be 30cm to the nearest tenth what is the area of the wheel

Answer 1

Okay well circumference of a circle is 2pi*r.

All we need to do is work backwards. So 30cm = 2pi*r (solve for r)

r=30/(2*pi)

Then whatever you find for r, then plug that in to pi*r^2 (area of a circle).

Answer 2

Final answer: 71.6 cm^2

Answer 3

Let me know if you need any further explanation.