A rope of which a calf is tied is increased from 5m to 9 m, how much additional grassy ground shall it graze? Choices: A) 1218 B) 180 C) 176 D) 200 E) 291
π (92 – 52) = 176   Answer: 176
<result>C</result>
A rope of which a calf is tied is increased from 5m to 9 m, how much additional grassy ground shall it graze?