A cinema screen is measured as 6.4 m by 18.2 m, to 1dp. Calculate the limits of accuracy for the area of the screen

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

25. 22 + 1 2 25