Question

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.

Answer 1

The area of a rectangle is just \(\huge l*w\).

If \(l=9.00\) and \(w=4.25\),

then the area of the rectangle is
\(\huge 9.00*4.25=?\).

Answer 2

i know that but i got it wrong because i dont know how to round it

Answer 3

If you know it, what is it? :)

Answer 4

38.25

Answer 5

but how do you round the significant digits?

Answer 6

Okay, so to round it up, notice that both have three significant digits. So your answer must also have three significant digits.

Answer 7

\(\huge 38.25\) has four significant digits. You want three, so you will round it to the nearest tenths.

Answer 8

so its 38.3?