One acre is equal to 4840 square yards. How many square yards, expressed in scientific notation, are there in 450 acres?
To find the total number of square yards in 450 acres, we can multiply the number of square yards in one acre (4840) by the number of acres:
450 x 4840 = 2,178,000
To express this in scientific notation, we need to move the decimal point so there is one digit to the left of the decimal point. This requires dividing by 10:
2,178,000 รท 10 = 217,800
We now have one digit before the decimal point and five digits after, so we can express this in scientific notation as:
2.178 x 10^5 square yards.