Q: A rectangle has a length of 9.00 inches and a width of 4.25 inches. What is the area in square inches? Round to the correct significant digits.
I put 38.25 the first time but it said it was wrong. would it be 38 instead??
Seems correct to me. Hmmm, any other clues?
correct number of significant digits? three. 38.3
Oh wow, this refreshed my memory on significant digits/figures. Thanks!
To find the area of a rectangle, you need to multiply the length by the width. In this case, the length is 9.00 inches and the width is 4.25 inches.
To multiply 9.00 inches by 4.25 inches, you need to follow these steps:
1. Remove any trailing zeros to make the multiplication simpler. So, instead of 9.00 inches, consider 9 inches.
2. Multiply the two numbers: 9 inches x 4.25 inches.
9 inches
x 4.25 inches
____________
36 inches
+ 27 inches
____________
38.25 inches
When you multiply 9 inches by 4.25 inches, you get 38.25 square inches as the result.
Therefore, the area of the rectangle is 38.25 square inches, rounded to the correct significant digits.