23.What is the approximate circumference of a circle with a radius of 6 centimeters?

A.12
B.18
C.24
D.36
D

24.What is the length of the diameter if the radius is 15?
A.5
B.15
C.30
D.45
C

27.What is the circumference of the circle velow if it has a radius of 6
A.6
B.12
C.18
D.36
D

Right.

To find the circumference of a circle with a given radius, you can use the formula C = 2πr, where C is the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and r is the radius of the circle.

For question 23, the radius of the circle is given as 6 centimeters. Plug this value into the formula:

C = 2πr
C ≈ 2 * 3.14159 * 6
C ≈ 37.6991

Since the options given are approximate, let's find the closest option. The closest option is D, which is approximately equal to 36. Therefore, the approximate circumference of the circle with a radius of 6 centimeters is 36.

For question 24, the diameter of a circle is twice the length of its radius. Therefore, if the radius is given as 15, the diameter would be:

Diameter = 2 * radius
Diameter = 2 * 15
Diameter = 30

Therefore, the length of the diameter is 30.

For question 27, we can use the same formula as in question 23 to find the circumference:

C = 2πr
C ≈ 2 * 3.14159 * 6
C ≈ 37.6991

Again, let's find the closest option. The closest option is D, which is approximately equal to 36. Therefore, the circumference of the circle with a radius of 6 is approximately 36.