If you open math book you will find a lot of mathematical questions but
youshould have solve this question.
It is from class 10 rd sharma chapter 15.4 mensuration .
In this question we have to find the area that will be left un-grazed
given that Four cows are tethered at four corners of a square plot of
side 50m, so that they just cannot reach one another.
Given,
Side of square plot = 50 m
Radius of a quadrant = 25 m
So, we can tell
Area of plot left un-grazed = Area of the plot – 4 x (area of a quadrant)
= Side2 – 4 x (¼ x πr2)
= 502 – 22/7 x (25)2
= 2500 – 1964.28
= 535.72 m2