A rope of which a calf is tied is increased from 12 m to 25 m, how much additional grassy ground shall it graze? Select:
A) 1217  B) 1219  C) 1511.7  D) 1212  E) 1312
π (252 – 122) = 1511.7   Answer:1511.7
<result>C</result>
A rope of which a calf is tied is increased from 12 m to 25 m, how much additional grassy ground shall it graze?