The Circumference and area of a circle of radius r are givin by 2 [pie] r and [pie] r[2], respectively use 3.14 for the constant [pie]

Question

A. What is the circumference of a circle with a radius of 2 m?

B.What is the area of a circle with a radius of 2 m?

C. The earth has a radius of about 3960 miles. Approximately how long is the equator?

Answer 1

Solve these problems.

A. C = 2*2*3.14

B. A = 3.14*2*3.14*2

C. C = 3.14*2*3960

We'll be glad to check your answers.

Answer 2

A. C = 12.14?

B. A = 18.84. 28?

C. C = 24868.8?

Answer 3

A. Please do the multiplication again. You're close but not right.

B. I mistyped the formula above. It should be:
A = 3.14*2*2

C. You're right! :-)

Answer 4

A. C= 12.56

B. A= 12.56

C. Alright!

Answer 5

Yay! You have all of them right now. The only addition is that the answer to B is 12.56 square meters.