Question

7. Two boxers have to fight in a square arena of
side 30 m. Four poles are stuck into the ground
at the four corners of the boxing arena and a
rope fence is put up around the poles to keep
the spectators away. Find the length of the rope
required if 2 m of the rope is used up for tying
the knots?
[Hint. Required length = Perimeter + 2 m for
knots]​

Answer 1

Step-by-step explanation:

perimeter =4×30

=120m

length of rope=120+2+2+2+2

=128m

Answer 2

Answer:

128 metre of rope will be needed.

Step-by-step explanation:

Required length= Perimeter+2m+2m+2m+2m

(because there aur 4 poles so 4 knots)

Perimeter= 4*side

= 4*30m

= 120m

Now, perimeter+2m+2m+2m+2m

=120+2m*4

=120m+8m

=128m