a) 38L
b) 40L
c) 39.5L
d) 38.5L
Answer: d
Explanation: Diameter of bowl = 7 cm
Radius of bowl = $$\frac{2}{7}$$ cm
Height = 4 cm
Volume of cylindrical bowl :
$$\eqalign{
& = \pi {r^2}h \cr
& = \frac{{22}}{7} \times \frac{7}{2} \times \frac{7}{2} \times 4 \cr
& = 154\,cu.cm \cr} $$
Hence, volume of soup for 250 patients :
$$\eqalign{
& = 154 \times 250 \cr
& = 38500{\text{ c}}{{\text{m}}^3} \cr
& = 38.5{\text{L}} \cr} $$
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