Question

Q20. A cow is tethered to one corner of a rectangular field 50m by
40m, with a rope 7m long. How much area will be grazed by cow
and how much area will remain ungrazed?​

Answer 1

Answer:

Area of sector = thita/360 x 22/7 x r²

90/360 x 22/7 7²

1/4 x 154

154/4

38.5m²