What is the exact circumference of a circle with a diameter of 15 inches.

Circumference = π d

Insert values and calculate.

To find the exact circumference of a circle, you can use the formula: C = πd, where C represents the circumference and d represents the diameter.

In this case, the diameter is given as 15 inches. Substituting this value into the formula, we have:

C = πd
C = π(15 inches)

However, in order to have the exact circumference, we need to use the value of π accurately. π is an irrational number, which means it cannot be expressed as a finite decimal or fraction. It is approximately equal to 3.14159.

So, to find the exact circumference, we can multiply the value of π by the diameter:

C = 3.14159 × 15 inches

Calculating this, we get:

C ≈ 47.12385 inches

Therefore, the exact circumference of a circle with a diameter of 15 inches is approximately 47.12385 inches.