four cows are tetgred with ropes of equal length at 4 corners of a square field of sides 35 metres so that they can read one another . Find the area left ungrazed by the cows
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Step-by-step explanation:
Let the side of square is a.
a=25+25=50m
⇒ Area of square =a
2
=(50)
2
=2500m
2
⇒ Area of quadrant inside square =
4
1
πr
2
=
4
1
×
7
22
×(25)
2
∴ Area of quadrant inside square =491.70m
2
⇒ Area of shaded region = Area of square - 4× Area of quadrant.
⇒ Area of shaded region =2500−4×491.07
∴ Area of shaded region =2500−1964.28=535.71m
2
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