Step-by-step explanation:
Answer:
184.8
Answer: 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.
Since we have given that
Diameter of circular pond = 40 m
Radius of circular pond = 20 m
Width of path = 2 m
So, Radius of outer path = 20+2 = 22 m
Depth = 7 cm
So, Volume of gravels would be
\begin{gathered}\pi (R^2-r^)h\\\\=\dfrac{22}{7}\times (22^2-20^2)\times 0.7\\\\=\dfrac{22}{7}\times 42\times 2\times 0.7\\\\=184.8\ m^3\end{gathered}
π(R
2
−r
)
h
=
7
22
×(22
−20
)×0.7
×42×2×0.7
=184.8 m
3
Hence, 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.
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Answers & Comments
Step-by-step explanation:
your answer_____________
Answer:
184.8
Step-by-step explanation:
Answer: 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.
Step-by-step explanation:
Since we have given that
Diameter of circular pond = 40 m
Radius of circular pond = 20 m
Width of path = 2 m
So, Radius of outer path = 20+2 = 22 m
Depth = 7 cm
So, Volume of gravels would be
\begin{gathered}\pi (R^2-r^)h\\\\=\dfrac{22}{7}\times (22^2-20^2)\times 0.7\\\\=\dfrac{22}{7}\times 42\times 2\times 0.7\\\\=184.8\ m^3\end{gathered}
π(R
2
−r
)
h
=
7
22
×(22
2
−20
2
)×0.7
=
7
22
×42×2×0.7
=184.8 m
3
Hence, 184.8 cubic meters of gravels are required to gravel the path to a depth of 7 cm.