Posted by **Angie** on Friday, May 29, 2009 at 11:30pm.

Sophie measured a piece of paper to be 21.7 cm by 28.5 cm. The piece of paper is actually 21.6 cm by 28.4 cm.

Determine the amount of square centimeters in the area of the piece of paper using Sophie's measurements.(I got 618.45 sq cm)

Determine the number of square centimeters in the actual area of the piece of paper. (I got 613.44 sq cm.)

Determine the relative error in calculating the area. Express your answer as a decimal to the nearest thousandth. (I don't know how to do this part.)

- Math -
**drwls**, Saturday, May 30, 2009 at 12:20pm
You computed the measured area, 618.45 cm^2, correctly.

The true actual area, 613.44 cm^2, is also correct.

The relative error is

(measured-actual)/actual = 5.01/613.44 0.008167 = 0.008 (to the nearest thousandth)

- Math -
**Angie**, Saturday, May 30, 2009 at 12:37pm
thanks

## Answer This Question

## Related Questions

- math - When a square piece of paper is folded in half vertically, the resulting ...
- Maths - a rectangular piece of paper has length=14cm and breadth=12cm. A square ...
- Math - Maria had a square piece of paper. She cut 3 inches off the length and 4 ...
- math - each player is given a rectangular piece of graph paper that is 56cm long...
- Math - A square piece of paper is folded in half to make a rectangle. The ...
- English - Valmy gets a paper from the safe - a paper with a drawing on it...
- Math - Each letter of alphabet is written on a separate piece of paper and ...
- English - 1. Cats are various colors. 2. Cats are of various colors. (Which one ...
- Math - James has a square piece of paper. He wants to cut it into strips of ...
- English expression - I will distribute a piece of paper to each of you. Hand ...

More Related Questions