Question

A cow is tied up for grazing inside a rectangular field of dimension 40×36 m in one corner of the field by a rope of length 14m find the field left ungrazed by the cow

Answer 1

area grazed :

$(\pi \times r {}^{2} \times \alpha) \div 360$

22/7 x 14 x 14 x 90/360

154 m^2

Total area: 40x36 : 1440 m^2

Area left is : 1440 - 154 m^2

: 1286 m^2