A 3-sided rectangular pen is being built to hold 15 cows while allowing them access to a river. If each cow requires 30 square feet of grazing inside the pen and the sides of the fence will be built to integer lengths, which of the following could be the length of the fencing required to build the pen?
A. 45
B. 55
C. 62
D. 65
E. 70![]()
A. 45
B. 55
C. 62
D. 65
E. 70