Question

*43. A cow is tied to a pole, fixed to the mid-poing of a side of a square field of side 40 m.
by means of a 14 m long rope, Find the i) area that the cow can graze. II) decrease in the
grazing area, if the length of the rope is reduced to 10.5 m.​

Answer 1

The area that cow can graze is in the form of semicircle.

Radius of semicircle

Length of rope=14m

required area=1/2 πr2

1/2×22/7 r2

1/2×22/7×14×14=308m2