Question

A rectangular field is 75 metre in length and 50 metre in breadth. A fence has to be put around the field. The cost of wire is Rs.45 per metre. Find the total cost of fencing. If a square field has to be fenced at the same cost, what should be its maximum length?

Answer 1

Answer:

Step-by-step explanation:

perimeter of rectangle = 2* length + 2* breadth

75* 2 = 150

50 *2 = 100

100+ 150= 250 m

cost of wire = 250 * 45 = 11250

cost of wiring is rs. 11250

Answer 2

Answer:

a) 250 m

b) 11250 Rs.

c) 62.5 m

Given:

Length = 75 m

Breadth = 50

Finding The Perimeter

To find the perimeter of a rectangle, we multiply the length and the breadth by 2. Hence, we will:

2(75+50)

2(125)

250 m

Cost of the Fence

For every 1 meter, it cost 45 Rs. We will multiply:

250*45 = 11250 Rs.

With the same cost, find the square:

11250/45 = 250

One length = 250/4

                   = 62.5 m