Question

the cost of fencing a rectangular field at rupee 30 per meter is rupee 2400 . if the length of the field is 24m then its breadth is?

Answer 1

hey there.......

here is ur answer

<> first let's learn the formula for perimeter of a rectangle.

$2(lenght + breadth) = perimeter$

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.

$\frac{2400}{30}$

which is

$80m$

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...

$2(24 + breadth) = 80$

$48 + 2breadth = 80$

$2breadth = 80 - 48$

$2breadth = 32$

$breadth = \frac{32}{2}$

$breadth = 16m$

thank u

hope this helps you

have a nice day

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