Question

the area of a rectangular field is 10200 m square and its length is 120 M find the cost of fencing the field at rupees 5 per metre​

Answer 1

Answer:

Step-by-step explanation:

Hey mate!!!!

Area: 10200= length * breadth

                   =120 * breadth

Breadth = 10200/120=85m

Therefore breadth = 85m

They asked fencing which refers to Perimeter of the field

WHich is : 2(l+b) =  2(120+85)

                           =2(205)  = 410m

Cost of fencing = 410m * 5

                         =2050m

Hope this helps!!!!

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Answer 2

Answer:

₹ 2050

Step-by-step explanation:

=> To find the cost of fencing, first we have to find the perimeter of the rectangular field.

=> But before finding the perimeter, we have to find the breath of the rectangular field. ( Because the length is given already ).

Length of the rectangular field = 120 m

Area of the rectangular field = 10200 m^2

Breadth of the rectangular field = ?

Area of the rectangular field = 10200 m^2

l * b = 10200 m^2

120 * b = 10200 m^2

b = 10200 / 120 m

b = 85 m

Hence, the breadth is 85 m.

=> Now, let’s find the perimeter of the rectangular field........

Perimeter of the rectangular field = 2 ( l + b ) units

= 2 ( 120 + 85 ) m

= 2 * 205 m

= 410 m

Hence, the length of fence ( perimeter of the rectangular field) is 410 m.

=> Now, let’s find the cost of fencing.......

Cost of fencing 1 m = ₹ 5

Cost of fencing 410 m = ₹ 5 * 410

= ₹ 2050

Hence, to fence the rectangular field, it would require an amount of Rs.2050 .