Question

the perimeter of a rectangle ground is 80m. if it's length and breadth are as 3:2, find it's area. Also, find the cost of levelling it at Rs 7 per square m.

Answer 1

Answer:

The area of the rectangular ground is 385 sq m and the cost of levelling the ground is Rs 2688

Step-by-step explanation:

Let the length and the breadth of the rectangle be 3x and 2x respectively.

Perimeter=2×(length + breadth)

Now, perimeter is given 80m

80= 2×(3x+2x)

or, 40=5x

or, x=8

So, length of the rectangle= 3x

=24m

And the breadth of the rectangle = 2x

= 16m

So, the area= l×b

= (24×16)m²

=384m²

Now, the cost of levelling 1 m²=Rs 7

So, the cost of levelling 384m²= Rs(7×384)

=Rs2688

Answer 2

Is ANS is 3.65 per square meter.

Mark Bralinly