Question

a trampoline has a diameter of 21 ft. what is the areaUse the approximate value of 3.14 for The area of the trampoline is approximately

Answer 1

We have a trampoline with 21ft of diameter so we can calculate the radius like:

`r=(D)/(2)`

so if we solve it will be:

`\begin{gathered} r=(21)/(2) \\ r=10.5 \end{gathered}`

Now we can use the formula for the area of a circle that is:

`A=\pi r^2`

so:

`\begin{gathered} A=3.14\cdot(10.5)^2 \\ A=346.185 \end{gathered}`