The area of a rectangular piece of a board is $36 c m^{2}$ . If its thickness is $4 c m$ , what is the volume of the board?

26 cm

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4 cm

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9 cm

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12 cm

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Solution

The correct options are
B
4 cm

D
12 cm

Given,
Area of a rectangle = $36 c m^{2}$
Thickness of rectangle = $4 c m$
Volume = $A r e a \times T h i c k n e s s$
$∴ V o l u m e$ = $36 \times 4$ = $144 c m^{3}$
$144 c m^{3}$ = $144 (10^{- 2} m)^{3}$ = $144 \times 10^{- 6} m^{3}$

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