A rope of which a calf is tied is increased from 9 m to 23 m, how much additional grassy ground shall it graze?	Choose the correct answer: A) 1218 B) 1212 C) 1408 D) 2707 E) 2591
π (232 – 92) =1408   Answer: 1408
<result>C</result>
A rope of which a calf is tied is increased from 9 m to 23 m, how much additional grassy ground shall it graze?