A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze?

A rope of which a calf is tied is increased from 12 m to 23 m, how much additional grassy ground shall it graze?

A. 1120 m2
B. 1250 m2
C. 1210 m2
D. 1200 m2