The width of a rectangle has been measured as 19.4mm correct to 1 decimal place. what is the lower bound for the area of this rectangle?

If the width of the rectangle is correct to 1 decimal place, and it is measured as 19.4, the lower bound is 19.3, given the single decimal place digit margin of error.

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this