What is the area in square yards of a field that is 120 feet long and 30 feet wide?

What is the area in square yards of a field that is 120 feet long and 30 feet wide?

• A. 360 square yards
• B. 320 square yards
• C. 400 square yards
• D. 420 square yards

Answer: (C)

Area is found by multiplying length by width. The field is 120 feet long and 30 feet wide, so the area is 120 × 30 = 3600 square feet. To express this in square yards, convert using the fact that 1 square yard equals 9 square feet. Divide 3600 by 9 to get 400 square yards. Therefore, the area is 400 square yards. If the unit conversion isn’t done, you’d end up with 3600 square feet instead of square yards, which doesn’t answer the question.

Area is found by multiplying length by width. The field is 120 feet long and 30 feet wide, so the area is 120 × 30 = 3600 square feet. To express this in square yards, convert using the fact that 1 square yard equals 9 square feet. Divide 3600 by 9 to get 400 square yards. Therefore, the area is 400 square yards. If the unit conversion isn’t done, you’d end up with 3600 square feet instead of square yards, which doesn’t answer the question.