Question

KS.
Find the cost of levelling a ground at
the rate of Rs 12 per square metre if it is 45 m long and 30 m wide.​

Answer 1

Question

Find the cost of levelling a ground at the rate of Rs 12 per square metre if it is 45 m long and 30 m wide.

Answer

Given:

Length=45m

Breadth=30m

By Question,

Surface area=(45 × 30)m²=1350

Cost of levelling 1 m²= Rs12

Cost of levelling 1350m²= Rs12 × 1350

=Rs16200

Additional information

Area of a rectangle= length × breadth

Perimeter of a rectangle = sum of for sides.

Answer 2

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Q) Find the cost of levelling a ground at the rate of Rs 12 per square meter if it is 45 m long and 30 m wide .

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★ Given :

• Length = 45 m
• Breadth = 30 m
• Rate of levelling = Rs 12 per m²

★ To Find :

• The cost of levelling.

★ Solution :

Since the plot is levelled , we have to find the area.

$\rm \: area = length \times breadth$

$\mapsto \rm \: area = 45 \times 30 \: {m}^{2}$

$\mapsto \boxed{ \rm \: area = 1350 \: {m}^{2} \: }$

Now , finding the cost .

$\rm \: cost = rate \times area$

$\mapsto \rm \: cost \: of \: levelling = 1350 \: \cancel {m}^{2} \times \frac{12}{ \cancel{m}^{2} }$

$\mapsto \pink{\boxed{ \rm \: cost \: of \: levelling =rs \: 16200 \: }}$

So ,

The cost of levelling = Rs 16200 .

_________________________

★ Know More :

• Levelling : It's a type of surface irrigation .

• Area of rectangle = length × breadth

• Perimeter of rectangle = 2 ( length + breadth )

• The unit of area is in the form : unit²

• The unit of perimeter : unit .