wlbrt316
perimeter=23 feet



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Insanity
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area?

CptnChiguire
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Of what figure?

wlbrt316
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dw:1317774831555:dw

CptnChiguire
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Is the whole bottom side 2x ft long?

wlbrt316
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yes

CptnChiguire
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The perimeter is the sum of the sides, so:
x + 2x + (3 + x) = 23
4x + 3 = 23
4x = 20
x = 5

wlbrt316
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thanks

CptnChiguire
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Now for the area you need to find the height:

wlbrt316
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yes but i know about that i just need the perimeter and i aslo have one more

CptnChiguire
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Let y be the length of the left part of the bottom side, we have:
y^2 + h^2 = 5^2
and:
(10  y)^2 + h^2 = 8^2

wlbrt316
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dw:1317775181974:dw

wlbrt316
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and this time perimeter=24 meteres

CptnChiguire
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so you sum all four sides:
2x + (x+3) + 2x + (x + 3) = 24
6x + 6 = 24
6x = 18
x = 3

wlbrt316
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i think its that way because my math teacher doesnt teach us at all and me and my classmates get confused

wlbrt316
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thanks for explaining to me