Question

Find the length of the boundary of a square field side 10 cm.​

Answer 1

Answer:

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Step-by-step explanation:

Given side of square =10m, thus perimeter P=40m

Time taken to cover the boundary of 40 m =40 s

Thus in 1 second, the farmer covers a distance of 1 m

Now distance covered by the farmer in 2 min 20 seconds = 1×140=140m

Now the total number of rotation the farmer makes to cover a distance of 140 meters =

perimeter

totaldistance

=3.5

At this point, is at a point say B from the origin O

Thus the displacement s=

10

2

+10

2

from Pythagoras theorem.

s=10

2

=14.14m

Answer 2

length of boundary means perimeter

perimeter of square is 4 x side

=4 x 10

=40cm

THE LENGTH OF BOUNDARY IS 40cm