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Calculations and answers to various questions related to the size of an acre, the dimensions of a farm field, and the number of seeds required for planting. Students will learn how to calculate the area of an acre using square rods, the size of a football field, and the dimensions of a square acre field. Additionally, they will discover how many seeds are needed to plant an acre and a larger farm field.
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Calculations from the Farm Student Activity Worksheet
How big is an acre? An old unit of measure is the rod. A rod is 16 1/2 feet long. A square rod is a square plot of ground 16 1/2 feet on a side. An acre is 160 square rods.
Questions:
It is common these days for farmers to have fields of 120 acres.
When planting corn, it is common for the rows to be 30 inches apart and the goal is to have a corn stalk about every 4 inches.
8 The combined length would be in the range of 17,424 to 17,472 feet or 3.3 miles. If you use a square plot (209 feet by 209 feet) then you have 209 ft x 12 inches/ft = 2508 inches. 2508 inches / 30 inches per row = 83.6 rows. 83.6 rows x 209 feet (the length of the field) = 17,472.4 feet. 17,424 feet / 5,280 feet/mile = 3.3 miles. There are a number number of places one can round of on this problem and different shapes of fields, but the answer in miles should generally come out to be 3.3.