Question

Four square flowerbeds each of sides 2 m are dug on a piece of land 12 m long

and 9 m wide. Find the area of the remaining portion of the land. Find the cost

of levelling this land at the rate of Rs 3 per 100 cm².​

Answer 1

Answer:

• The area of the remaining portion of the land = 92 m² Or 920000 cm²

• The cost of the levelling is ₹ 27600.

Given :

• Sides of flowerbeds = 2m

• Length of dug peace on land = 12 m

• Breadth of dug peace on land = 9 m

• Cost = ₹ 3 per 100 cm²

To find :

• The area of the remaining portion of the land =?

• The cost of levelling =?

Step-by-step explanation:

Area of four flowerbeds = Area of square = side²

= 4 flowerbeds × side²

= 4 × ( side²)

= 4 × 2 × 2

= 16 m²

Now, Area of land = Area of rectangle = l × b

= 12 × 9

= 108 m²

So, the remaining portion = area of land - area of four flowerbeds

= 108 - 16

= 92 m²

Or, 92 × 100 × 100 cm² = 920000 cm ²

Then, the cost of levelling this land at the rate of Rs 3 per 100 cm²,

= 920000 × 3/100

= 9200 × 3

= ₹ 27600

Thus, The cost of the levelling is ₹27600.

Answer 2

Step-by-step explanation:

Answer :-

₹27600

Given :-

Four square flowerbeds each of sides 2m are dug on a piece of land 12 m long and 9 m wide.

To find :-

The area of the remaining portion of the land.

SOLUTION :-

Area of the piece of land = Length×Breadth

= 12m × 9m = 108 m²

Area of each flowerbed = (Side)² = 2² = 4 m²

Area of four flowerbeds = 4 m² × 4 = 16 m².

Area of the remaining portion of the land = Area of the piece of land - Area of four flowerbeds

===> Area of the remaining portion = 108-16 = 92m².

92m² = 92×100×100 = 920000 cm²

Also given that,

Cost of leveling 100 cm² land = ₹3

Cost of levelling 1 cm² land = ₹3/100 = ₹0.03

Cost of 920000 cm² land = ₹0.03 × 920000 = ₹27,600.

Therefore, cost of levelling the remaining portion is ₹27,600.