Find the circumference (in cm.) of a circle of radius 7cm.

Options

A. 56
B. 44
C. 16
D. 32

Answer

To find the circumference of a circle with a given radius, we can use the formula:

**Circumference (C) = 2πr**

Where:
- C is the circumference
- π (pi) is a constant approximately equal to 3.14
- r is the radius of the circle

**Step 1: Identify the radius**
The radius (r) of the circle is given as 7 cm.

**Step 2: Substitute the radius into the formula**
Now, we substitute the value of the radius into the circumference formula:
C = 2π(7)

**Step 3: Calculate the circumference**
Now, we calculate the circumference:
C = 2 × 3.14 × 7
C = 6.28 × 7
C = 43.96 cm

**Step 4: Round the result**
For practical purposes, we can round 43.96 cm to 44 cm.

Therefore, the circumference of the circle is approximately **44 cm**.

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