Question

Q5) a) A field is in the shape of a rectangle which is 480 m long and 400 m
wide. Find the cost of cultivating the field at the rate of Rs. 20,000 per hectare.

Answer 1

Answer: Rs.3,84,000 or, 3.84 lakhs

Step-by-step explanation:

First, we need to find the area and then multiply it with the number of hectares. Keep in mind, one hectare is 10,000m^2 of land.

area of a rectangle = 480 x 400 = 1,92,000m^2 = 19.2 hectares

Cost for cultivating per hectare = Rs.20,000

Cost for cultivating 19.2 hectares = 20000 x 19.2 = Rs.3,84,000

Answer 2

Given,

A field is in the shape of a rectangle which is $480m$ long and $400m$ wide.

Here, we have to find the area of rectangle

Formula,

Area of rectangle $=lb$

Here, $l=480m, b=400$

Area $= 480\times400$

Area $= 192000$$m^{2}$

Here, we have to convert square meters into hectare

$1$ hectare $=$$10,000$ square meters

So,

$192000m^{2} =19.2hectare$

According to the question,

The cost of cultivating the field at the rate of $20000$ rupees per hectare

So,

$19.2 hectare=19.2\times20000$

$= 384000$

Therefore, the cost of the rectangle field is $384000$ rupees.