Exploring Circumference and Area of Circles

What is the term used to describe the distance across a circle through its center?

What is the formula for the circumference of a circle when given the diameter?

If the diameter of a circle is 10 inches, what is the circumference using Pi (π) as 3.14?

Using the formula C = 2πr, find the circumference if the radius is 24 inches.

How many times does a bug travel the circumference of a 150.8 inch circle if it completes 5 rotations?

Calculate the distance around a track that includes two straight lengths of 84.39 meters and two semicircles with a diameter of 73 meters each.

What is the perimeter of a rectangle that is 8 inches by 10 inches?

What is the new perimeter of the track if the width is increased by 9.76 meters on both sides?

If a wire frame shaped into a circle has a circumference of 36 inches, what is its radius?

If the area of a rectangle is subtracted by the area of a triangle to estimate a floor plan, what is this method called?