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  1. . Jenna was building a fence for her new sheep's pen. She needs a total of 40 linear feet of lumber. Some of her neighbors have agreed to give her lumber and she wants to know if she has enough. Homework Help ✎

    1. Neighbor Jim will give her a board that he says is 8one-half feet long. Neighbor Malia will give her two boards that she says are each 126 inches long. What is the total combined length of lumber Jenna has received?

    2. Neighbor Mike called and offered to donate a board that is 400 centimeters long. Jenna found the conversion information below. Help her decide if she has enough lumber to make her pen.

      1 cm = 0.3937 in.
      1 m = 3.281 ft
      100 cm = 1 m

The best way to determine what length Jenna has is to put all the board lengths into the same units. Using feet will make it easier to determine if Jenna has enough at the end. Jim has 8.5 feet to give. Malia has 2(126) inches. How many feet is 2(126) inches?

Can you do this calculation in your head? There are 12 inches in 1 foot, therefore 120 inches is 10 feet.

100 cm = 1 m
Therefore, 400 centimeters is equal to 4 meters.
How many feet is 4 meters?