Posted by **Richard D** on Friday, October 19, 2012 at 11:40am.

Find the area of a rectangle if three of its corners are (-3.7, -3.1), (1.2, -3.1), and (1.2, 5.3). Hint: find the 4th corner first.

- College Math -
**Reiny**, Friday, October 19, 2012 at 12:03pm
I made a rough sketch, and I bet the missing point is

(-3.7 , 5.3)

length = 1.2 - (-3.7) = 4.9

width = ...

area = length x width

= ...

- College Math -
**Richard D**, Friday, October 19, 2012 at 12:39pm
How do you solve for the length you don't have to slove it but what would the formula be ?...

- College Math -
**Steve**, Friday, October 19, 2012 at 2:39pm
hard to believe your class materials don't include the formula for finding the distance between two points. Think Pythagorean Theorem.

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