Question

find the cost of fencing a square park whose side side is 80m and the cost of fecing per meter idls rs 10 rs​

Answer 1

Step-by-step explanation:

perimeter of square=4×side

perimeter of square=4×80=320m

if the rate of 1m for fencing=10rs

the the rate of 320m for fencing=320×10

=3200rs

Answer 2

CORRECTED QUESTION

Find the cost of fencing a square park whose side side is 80m and the cost of fencing per meter is Rs10 .

Answer

$\red\bigstar$ Total cost of fencing the square field  = ₹3200.

SOLUTION

Sides of the square field = 80m.

$\setlength{\unitlength}{1cm}\begin{picture}(0,0)\thicklines\multiput(0,0)(4,0){2}{\line(0,1){4}}\multiput(0,0)(0,4){2}{\line(1,0){4}}\put(-0.5,-0.5){\bf D}\put(-0.5,4.2){\bf A}\put(4.2,-0.5){\bf C}\put(4.2,4.2){\bf B}\put(1.5,-0.6){\bf\large 80\ m}\put(4.4,2){\bf\large 80\ m}\end{picture}$

∵ We know that fencing is done along the side , we must find the perimeter of the square field.

Perimeter of a square = 4a , Where a is the side of the square.

Here,

a = 80m.

⇒ Perimeter of the square field = 4 × 80

⇒ Perimeter of the square field = 320m.

$\boxed{\sf The\: total\; cost\; of \;fencing \;the \: field = Perimeter * Cost \: of \: fencing \: per \: meter }$

Here,

Perimeter of the field = 320m.

Cost of fencing per meter = ₹10.

⇒ Total cost of fencing the field = 320 × 10

⇒ Total cost of fencing the field = ₹3200.