please help me with this math problem!!!!?

Question

my teahcer didn't teach me this so i need your help. how do u find the area when you already know the perimeter & length. please don't post dumb answers!!!
thanks

Answer 1

okay

2L(length) + 2H(height) = perimeter.

You know length and perimeter, so you just solve for height.

Area = length x height

Answer 2

to find the area when the perimeter & length is known is simple
for example:
say the lenght is 12 in. and the perimeter is 36 in. There are 4 sides 2 length and 2 width. add the 2 lenght 12+12=24 then subtract 24 from the perimeter like this 36-24=12 so now you have 12 as the width but there are 2 sides so divide 12 by 2 like so 12/2=6 and there. the lenght is 12 and the width is 6

Answer 3

This is as simple a formula as I can use to explain it. Half of the perimeter subtract the length gives you the height, multiply that by the length and you have the area.

(P/2 - L) * L = Area

We all assumed this is a rectangle so if it is not the answer is wrong and we need more info.

Answer 4

It depends on the figure whose area you are calculating, but most likely the previous answer is correct.

Perimeter = 2 x Length + 2 x Height for a rectangle.

For other figures, it may vary.

Answer 5

add up both lengths and subtract them from the perimiter. Take that number and divide it by 2. Now take that number and multiply it by one of the lengths and divide that number by 2 and thats the area.

Answer 6

area= L x W. ( L stands for length and W stands for width.)
You should put more information.
If it is a rectangle, L x W.
It should say on the paper you have.
If it is a square.................I forgot...............but......oh!...........
Just do the same!