Question

A rectangular field of length 50m and breadth 4 fenced. Find the cost of fencing at the rate Rs.4 per meter.

Answer 1

Answer:

perimeter = 2(l+b)

= 2 (54)

= 108m

cost of fencing = 108×4

= Rs. 432

Answer 2

Appropriate question -

Find the cost of fencing rectangular field of length 50m and breadth 4m at the rate of Rs.4 per metre.

_______

Given thαt,

• Length of rectangular field = 50m
• Breadth of rectangular field = 4m
• Cost of fencing = Rs. 4 per metre

❍ We need to find the cost of fencing the field.

_________

To do so,

• we'll find the perimeter or length of the boundary of field first

Perimeter of rectangle = $\large{\boxed{\sf{\orange{2(l+b)}}}}$

• Substitute the values and simplify.

:$\implies{\sf{2(50+4) = 2(54)}}$

:$\large\implies{\boxed{\sf{\red{108m}}}}$

Now,

$\because$ Cost of fencing = Rs. 4 per metre.

$\therefore$ Cost of fencing the field = $\displaystyle{\sf{(perimeter\:of\:the\:field \times 4)}}$

• Substitute the value.

$\implies{\sf{108 \times 4}}$

$\large\implies{\boxed{\sf{\red{Rs.432}}}}$

Hence, the cost of fencing the rectangular field is Rs. 432.

And we are done! :D

__________________________