Answer:
Step-by-step explanation:
2+7+2 seems to be right which is 11
2+7+2 = 11 ft
πd
7π = 21.98
21.98/2 = 10.99
10.99+11 = 21.99 ft
The mistake was that however they may have solved what 7π was, it is a semi-circle so they have forgotten to half 7π
