how can you solve for the points of a rectangle given only its four equations? also,how can i get its area?...help me pls....i already tried solving its intersection but it doesnt work out well...:confused:

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- Dec 18th 2007, 11:06 PMapril29equation of a straight line problem
how can you solve for the points of a rectangle given only its four equations? also,how can i get its area?...help me pls....i already tried solving its intersection but it doesnt work out well...:confused:

- Dec 19th 2007, 01:36 AMmr fantastic
- Dec 19th 2007, 02:33 PMxifentoozlerix
It sounds like you have four equations of lines which somehow intersect to form a rectangle (or some quadrilateral if you are confusing terms). What you would do to find its area is to take the double integral over the edges of the quadrilateral, taking care to ensure you have the correct boundaries and proper integration order. Without more context though, your qeustion cannot be answered.

- Dec 19th 2007, 04:17 PMbadgerigar
I assume you are looking for the corners of the rectangle.

Quote:

i already tried solving its intersection but it doesnt work out well...:confused:

If you haven't seen double integrals before, you can also do this by finding the lengths of 2 adjacent sides (after you have the corners) using the normal formula and multiply them together.