The Wards bought a rectangular piece of land that was 4 miles long and 3 miles wide. Half of the land could be farmed. How many square miles could not be farmed?

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4*3 * 1/2 = ____

To find the area of the land, multiply the length by the width: 4 miles * 3 miles = 12 square miles.

Since half of the land could be farmed, only 1/2 * 12 square miles = 6 square miles could be farmed.

Therefore, the number of square miles that could not be farmed is 12 square miles - 6 square miles = 6 square miles.

To find out how many square miles could not be farmed on the rectangular piece of land bought by the Wards, we need to calculate the total area of the land and then determine the area that could be farmed.

The total area of a rectangle can be found using the formula:
Area = Length x Width

Given that the length of the land is 4 miles and the width is 3 miles, we can calculate the total area as follows:
Area = 4 miles x 3 miles
Area = 12 square miles

Since half of the land could be farmed, we need to find half of the total area:
Area that could be farmed = 12 square miles / 2
Area that could be farmed = 6 square miles

To find out how many square miles could not be farmed, we subtract the area that could be farmed from the total area:
Area that could not be farmed = Total area - Area that could be farmed
Area that could not be farmed = 12 square miles - 6 square miles
Area that could not be farmed = 6 square miles

Therefore, 6 square miles could not be farmed on the rectangular piece of land bought by the Wards.