A horse is placed for grazing inside a rectangular field 70m by 52m and is tethered to one corner by a rope 21m long. On how much area can it graze?

Explanation

Given: rectangular field 70 m by 52 m and rope 21 m long


Area of grass grazed by horse `=frac{theta}{360^{0}} \times\ pi r^2`


[# X_RD_15_E01_35]
`=frac{90^{circ}}{360^{circ}} times frac{22}{7} \times\ 21 \times\ 21 `


`=frac{693}{2}=346.5 cm^2`