Question

the perimeter of a rectangular field is 500m and it's length is 150m find:
1: it's breadth
2: it's area
3: cost of ploughing the field at the rate of rs 1.20 per square meter​

Answer 1

Answer:

(i) Perimeter of a rectangle = 2 x (length + breadth) ⇒ 500 m = 2x(150 m + breadth) ⇒ 250 m – 150 m = breadth ∴ breadth = 100 m

(ii) Area of rectangular field = length x breadth = 150 m x 100 m = 15000 m²

(iii) Cost of ploughing the field at the rate of = Rs 1.20 per square m² = area of the field x rate of ploughing = 15000 m² x Rs 1.20 per square metre = Rs 15000 x 1.20 = Rs 18000

Step-by-step explanation:

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Answer 2

Solutions:

The perimeter of the rectangular field = 500 m

The length of the rectangular field = 150 m

What to find?

1) It's breadth:

Perimeter of rectangle = 2(L + B)

500 = 2(150 + z)

500 = 300 + 2z

2z = 500 - 300 = 200

z = 200/2 = 100 m

The breadth of the rectangular ground is 100 m.

2) It's area:

Area of rectangle = Length * Breadth

= 150 m * 100 m

= 15000 sq m

The area of the rectangular field is 15000 sq m.

3) Cost of ploughing the field at the rate of rs. 1.20 per square meter:

Cost of ploughing per square meter = rs. 1.20

Cost of ploughing 15000 square meter =

15000 * 1.20 = rs. 18000.

The cost of ploughing the rectangular field is rs. 18000.