What is the approximate difference in the circumference of a circle with a radius of 4 ft and the circumference of a circle with a radius of 6 ft?

Question

2 ft
6 ft
13 ft
20 ft

Answer 1

The formula for calculating the circumference of a circle is 2πr, where r is the radius of the circle.

For a circle with a radius of 4 ft, the circumference would be approximately:
2 * π * 4 = 8π ft

For a circle with a radius of 6 ft, the circumference would be approximately:
2 * π * 6 = 12π ft

The approximate difference in circumference between the two circles would be:
12π - 8π = 4π ft

Since π is approximately 3.14, the approximate difference in circumference would be:
4 * 3.14 = 12.56 ft

Therefore, the approximate difference in circumference is 13 ft.

So, the correct answer is: 13 ft.