Question

Find the cost of fencing a rectangular field ,
whose length is 45 m and breadth is
30 m at the rate of Rs. 10 per
m (pls jaldi)​

Answer 1

Answer:

Length of rectangular field=45m

Breadth of rectangular field=30m

Perimeter of rectangle=2(l+B)

2(45+30)

2×75

150m

Cost of fencing 1 m=₹10

Cost of fencing 150m=150×10

₹1500

Answer 2

2(lenght + breadth) = perimeter2(lenght+breadth)=perimeter 

of the cost of 1m is 30 

and total cost is 2400

then to find the total number of m 

we need to take the perimeter because they told fencing.... fencing goes around the ground so it is perimeter

we should divide 2400 by 30.

\frac{2400}{30}302400 

which is 

80m80m 

so the perimeter is 80 m 

lenght as given is 24 m 

if we substitute this number in the formula for perimeter of rectangle we get... 

2(24 + breadth) = 802(24+breadth)=80 

48 + 2breadth = 8048+2breadth=80 

2breadth = 80 - 482breadth=80−48 

2breadth = 322breadth=32 

breadth = \frac{32}{2}breadth=232 

breadth = 16mbreadth