There is a square plot with side length equal to $13 m$ . A farmer wanted to grow grass on half his field and plough the remaining land to a depth of $40 c m$ . Find the volume of land ploughed?

84.5 m²

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169 m²

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52 m²

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84.5 m

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Solution

The correct option is D
84.5 m

Given,
Side length of square = $13 m$
Total area of a square = $s \times s = 13 \times 13 = 169 m^{2}$
Area of land ploughed = half of the total area = $\frac{169}{2}$ = $84.5 m^{2}$
Depth = $40 c m = 0.4 m$
Volume = $A r e a \times d e p t h$ = $84.5 m^{2} \times 0.4 m$ = $33.8 m^{3}$

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There is a square plot with side length equal to 13 m. A farmer wanted to grow grass on half his field and plough the remaining land to a depth of 40 cm. Find the volume of land ploughed?

The correct option is D 84.5 m Given, Side length of square = 13 m Total area of a square = s×s = 13×13 = 169 m2 Area of land ploughed = half of the total area = 1692 = 84.5 m2 Depth = 40 cm = 0.4 m Volume = Area×depth = 84.5 m2×0.4 m = 33.8 m3

There is a square plot with side length equal to $13 m$ . A farmer wanted to grow grass on half his field and plough the remaining land to a depth of $40 c m$ . Find the volume of land ploughed?