Chapter 11.7, Problem 7PPS

To determine

To find the circumference of the circle, rounded to the nearest tenth.

Answer to Problem 7PPS

  $22$ meters

Explanation of Solution

Given information:

Diameter (d) $=7$ meters.

Formula used:

Circumference (c) of a circle can be calculated using formula $2\times \pi \times r$

Where ‘r’ is the radius $=\frac{d}{2}$ .

For calculations, take value of $\pi =\frac{22}{7}$ .

Calculation:

  $c=2\times \pi \times r$

Formula of circumference of a circle.

  $=2\times \frac{22}{7}\times \frac{7}{2}$

Putting in the value of the radius and dividing the common numbers from the numerator and denominator.

  $=22$ meters.