Given:
Radius of flower garden is 17yd.
Radius of outer edge is 20 yd.
Required:
To find the number of bags.
Explanation:
The are of the garden is
[tex]\begin{gathered} A=\pi\times17^2 \\ =3.142\times17\times17 \\ =908.038 \end{gathered}[/tex]
The area of the outer ring is,
[tex]\begin{gathered} A=\pi\times20^2 \\ =\pi\times20\times20 \\ =1256.8 \end{gathered}[/tex]
The path area= overall area- garden area
[tex]\begin{gathered} A=1256.8-908.038 \\ =348.762 \end{gathered}[/tex]
Find the number of bag of sand required
[tex]\begin{gathered} =\frac{348.762}{2} \\ =174.381 \\ \approx174 \end{gathered}[/tex]
Final Answer:
174 bags required.
