A horse is tethered to one corner of a rectangular grassy field 40 m by 24 m with a rope 14 m long. Over how much area of the field can it graze?  Pick
A) 154 cm 2 B) 308 m 2 C) 150 m 2 D) 407 m 2 E) none of these

Rationale: area of the shaded portion = 1 ⁄ 4 × π × ( 14 ) 2 = 154 m 2 answer a
Answer: A