People of a village take good care of plants, trees and animals. They marked some land for their pets (cow and ox) and plants. Find the ratio of the areas kept for animals and plants to the total area of the village.

75 : 21

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125 : 39

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29 : 150

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29 : 121

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Solution

The correct option is C $29 : 150$
Area kept for animals
$= [(6 \times 3) + (\frac{22}{7} \times \frac{7}{2} \times \frac{7}{2})] m^{2}$
$= (18 + 38.5) m^{2} = 56.5 m^{2}$
Area kept for plants $= (8 \times 2) m^{2} = 16 m^{2}$
So, total area kept for plants and animals
$= (56.5 + 16) m^{2} = 72.5 m^{2}$
Area of land $= (25 \times 15) m^{2} = 375 m^{2}$
So, required ratio $= 72.5 : 375 = 29 : 150$ .

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People of a village take good care of plants, trees and animals. They marked some land for their pets (cow and ox) and plants. Find the ratio of the areas kept for animals and plants to the total area of the village.

The correct option is C 29:150Area kept for animals=[(6×3)+(227×72×72)]m2=(18+38.5)m2=56.5 m2Area kept for plants =(8×2)m2=16 m2So, total area kept for plants and animals=(56.5+16)m2=72.5 m2Area of land =(25×15)m2=375 m2So, required ratio =72.5:375=29:150.