The volume of a fish tank is 75.6 liters. Find the width of the tank, if the length and the height of the tank are 60cm and 42cm, respectively.

20 cm

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30 cm

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32 cm

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40 cm

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Solution

The correct option is B 30 cm
The given fish tank is in the shape of a rectangular prism.

olume of the tank = 75.6 liters

Length of the tank = 60 cm

Height of the tank = 42 cm

Volume = length $\times$ width $\times$ height

75.6 = 60 $\times$ width $\times$ 42

1 liter = 1000 cu cm

75.6 liters = 75600 cu cm

Width = $\frac{75600}{60 \times 42}$

= $\frac{7560}{252}$

$\begin{matrix} 302527560 - 756 - -- - 00 - 0 - 0 \end{matrix}$
= 30 cm

Hence, width of the tank = 30 cm

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