A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze?  Choose the correct choice from the following answers.
A) 1217
B) 1219
C) 1210
D) 1212
E) 1312
π (232 – 122) = 1210   Answer:1210
<result>C</result>
A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze?