Question

Diameter of a circle is 42 inches what is the circumference

Answer 1

To calculate the circumference of a circle with a diameter of 42 inches, use the formula C = πd, which gives us approximately 131.95 inches when rounded to two decimal places.

Step-by-step explanation:

If the diameter of a circle is 42 inches, to find the circumference, you would use the formula π×diameter (C = πd), where π (Pi) is approximately 3.14159. The diameter is the distance across the circle through its center. Therefore, the circumference is 3.14159 × 42 inches.

C = π × d
C = 3.14159 × 42
C = 131.94678 inches

So, the circumference of the circle is approximately 131.95 inches, when rounded to two decimal places.

Answer 2

Hi there!

`\large\boxed{42\pi \text{in or } 131.88 \text{in}}`

Use the equation C = dπ to calculate the circumference:

d = diameter

C = circumference

C = 42 · π = 42π in, or 131.88 in (π ≈ 3.14)