Mia needs to cut the third board to match the width of the shelter. How many feet of board will she need to cut off the existing board to reach this goal? The third board is 42 inches, the width of the shelter is 3 feet

Answer 1

Since there are 12 inches in a foot, the shelter is 3 feet * 12 inches per foot = <<3*12=36>>36 inches wide.
To match the width of the shelter, Mia needs to cut off 42 inches - 36 inches = <<42-36=6>>6 inches of board.
Since there are 12 inches in a foot, Mia needs to cut off 6 inches / 12 inches per foot = <<6/12=0.5>>0.5 feet of board. Answer: \boxed{0.5}.

Answer 2

Can you shorten your answer?

Answer 3

Mia needs to cut off 0.5 feet of board.