to estimate means to round to make it easier and i rounded 27.60 to 28 and 15% of 28 is 4.2, then to find the total value add the tip to the bill cost 4.2+28 to get 32.2 so its around 32.2 dollars
A rectangular prism is the shape of a box with 6 rectangular sides. If you slice down perpendicular to the base, you would still have another rectangle.
