Question

A horse is placed for grazing inside a square field 12 cm long and is tethered to one corner by a rope 8 cm long. The area it can graze is

• A. 50.18 sq cm
• B. 50.28 sq cm
• C. 50.38 sq cm
• D. 50.48 sq cm

Answer 1

The correct option is B 50.28 sq cm

The horse will be able to graze area $=\frac{\pi r^2}{4}$,
where $r$ is length of the rope $=8cm$
$\therefore$ Area $=\frac{\pi (8{)}^2}{4}$
$=\left(3.142\right)\left(16\right)=50.28cm$