Question

the figure below shows a circular courtyard. its radius is 24 m.
(a) use the calculator to find the circumference and area of the courtyard.
use 3.14 for π in your calculations, and do not round your answers.
make sure to include the correct units.
circumference:
area:
(b) the courtyard will be covered with gravel.
which measure would be used in finding the amount of gravel needed?

Explanation:

Step1: Calculate circumference

Circumference formula: $C = 2\pi r$. $r=24m$, $\pi=3.14$.
$C = 2 \times 3.14 \times 24 = 150.72$ m.

Step2: Calculate area

Area formula: $A = \pi r^2$.
$A = 3.14 \times 24^2 = 3.14 \times 576 = 1808.64$ $m^2$.

Step3: Determine gravel measure

Gravel covers the area, so use area unit $m^2$.

Answer:

Circumference: 150.72 m
Area: 1808.64 $m^2$
Measure for gravel: $m^2$