Do-it-in-your-head method: Length plus width is half the perimeter ie 161 cm, of which 68 is width so the length is 93 cm.
250x+x
3
72
If the perimeter is 84 feet and the length is twice the width, then the length will be 28 feet and the width will be 14 feet.
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Let the length be x:- 2*(x+79) = 350 2x+158 = 350 2x = 350-158 2x = 192 x = 96 centimeters Check: 96+96+79+79 = 350 centimeters
Perimeter = 2L + 2W 350 = 2(93) + 2W 350 = 186 + 2W 350 - 186 = 186 - 186 + 2W 164 = 2W 164/2 = 2W/2 82 = W So the width is 82 cm.
width*height*length=perimeter of a rectangular prism! :)
250x+x
Perimeter=24ft
The length is (18 centimeters) minus (the width)
Twice the (width plus length)
It is 2*(Length + Width).
2 x 8 = 1672 - 16 = 5656 / 4 = 14width = 1414 + 8 = 22length = 22
150 cm !
46 centimeters
4*Area/Perimeter