Sandbox

How many cubic meters of sand are needed to fill the sandbox on the field if it has the shape of a circle with a diameter of 3 m and is 25 cm deep?

Correct answer:

V =  1.7671 m³

Step-by-step explanation:

$$\begin{gathered} D=3\text{m} \\ h=25\text{cm}\to \text{m}=25:100\text{m}=0.25\text{m} \\ {S}_1=\pi \cdot (D/2{)}^2=3.1416\cdot (3/2{)}^2\doteq 7.0686{\text{m}}^2 \\ V=S_1\cdot h=7.0686\cdot 0.25=1.7671{\text{m}}^3 \end{gathered}$$

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