If the Diameter of a circle is 20, please find:
-The radius
-The circumference
-The area

Remember that the formula for circumference is: C+Pi x diameter
The formula for area is: A = Pi x radius squared

Radius = 10

Circumference = 62.83

Area = 314.16

Step-by-step explanation:

To find radius divide diameter by 2

To find Circumference multiply 2 × Pi × Radius

To find Area Square the Radius then multiply by Pi

(Use radius for each)

The radius of the circle is 10 because the radius is basically the half of the diameter. If you get a question where gives you the diameter and asks you the radius, all you need to do is to divide the diameter by 2.

For example: If the diameter of the circle is 50 then the radius is 25.

Radius: 10

To get the circumference of this circle, just simply do π (3.14) x 20 which should give you the answer "62.8".

Circumference: 62.8

To get the area of this circle, you need to divide the diameter by 2 (which gives you 10) and then do 10 squared x 3.14 (which gives you 314).

Area: 314

part a: 1.08

part b: 27.59