Question #0262a

1 Answer
Dec 27, 2016

Circumference = 219.91 cm
Area = 3848.45 cm^2

Explanation:

The circumference of a circle can be obtained by using the equation below:

http://www.wikihow.com/Calculate-the-Circumference-of-a-Circlehttp://www.wikihow.com/Calculate-the-Circumference-of-a-Circle

where the mathematical constant, pi, has a value of approximately 3.14 and r represents the radius of the circle.

All we have to do is multiply the given diameter by pi to determine C:

"Circumference" = 70cm xx pi
"Circumference" = 219.91 cm

The area can be computed by using the following equation:

http://areacircle.com/http://areacircle.com/

This equation requires that we have a radius instead of a diameter, but that's no problem since the radius is half of the diameter. Therefore, the radius is 1/2(70cm) or just 35 cm.

The area is: pixx(35cm)^2 = 3,848.45cm^2