Question

A circle has a diameter of 15 cm. Find the circumference. . Use 3.14 for π. Round your answer to the nearest tenth. PLEASE HELP!!!

Answer 1

47.1 cm

Explanation:

The formula for finding circumference is πd. So, plug in the given values and simplify the expression:

d = 15

π = 3.14

15 × 3.14 = 47.1

The circumference of a circle with a diameter of 15 cm and using 3.14 as a substitute for π will be 47.1 cm.

Answer 2

`\boxed {\boxed {\sf 47.1 \ cm}}`

Explanation:

The circumference of a circle is the perimeter or the distance around the circle. It is calculated using the following formula:

`c= \pi d`

The diameter of the circle is 15 centimeters. We are asked to use 3.14 for pi.

• d= 15 cm
• π = 3.14

Substitute the values into the formula.

`c= 3.14 * 15 \ cm`

Multiply.

`c= 47.1 \ cm`

This number only has numbers in the tenth place, so we don't need to round.

The circumference of the circle is 47.1 centimeters.