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Standard VIII

Mathematics

Finding Square Root of a Number

Question 112 ...

Question

Question 112 (ii)

Use the following figure, showing the layout of a farmhouse.

It costs Rs.91 per $m^{2}$ to fertilise the vegetable garden. What is the total cost?

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Solution

$∴$ Area of vegetable garden $= 49 m \times 15.2 m = 744.80 m^{2}$
$∵$ Cost to fertilise $1 m^{2}$ vegetable garden = Rs.91
$∴$ Cost to fertilise $744.80 m^{2}$ vegetable garden $= R s .91 \times 744.80 = R s .67, 776.80$

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Finding Square Root of a Number

Standard VIII Mathematics

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Question 112 (ii) Use the following figure, showing the layout of a farmhouse. It costs Rs.91 per m2 to fertilise the vegetable garden. What is the total cost?

∴ Area of vegetable garden =49 m×15.2 m=744.80 m2 ∵ Cost to fertilise 1 m2 vegetable garden = Rs.91 ∴ Cost to fertilise 744.80 m2 vegetable garden =Rs.91×744.80=Rs.67,776.80

Question 112 (ii)

Use the following figure, showing the layout of a farmhouse.

It costs Rs.91 per $m^{2}$ to fertilise the vegetable garden. What is the total cost?

$∴$ Area of vegetable garden $= 49 m \times 15.2 m = 744.80 m^{2}$
$∵$ Cost to fertilise $1 m^{2}$ vegetable garden = Rs.91
$∴$ Cost to fertilise $744.80 m^{2}$ vegetable garden $= R s .91 \times 744.80 = R s .67, 776.80$