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What is the length of the place mat with a 40 cm width and a perimeter of 240 cm?
Wiki User
∙ 13y ago
Let the length be x:-
2(x+40) = 240
2x+80 = 240
2x = 240-80
2x = 160
x = 80 cm
Check: 80+80+40+40 = 240 cm
Wiki User
∙ 13y ago
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The perimeter of a rectangle is 240 feet and Its length is 12 less than it's width what are the dimensions of the rectangle?
Let the length be x-12 and the width be x: 2(length+width) = perimeter 2(x-12+x) = 240 2x-24+2x = 240 4x = 240+24 4x = 264 x = 66 Therefore: length = 54 feet and width = 66 feet
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The perimeter of a rectangle is 240 feet and Its length is 12 less than it's width what are the dimensions of the rectangle?
Let the length be x-12 and the width be x: 2(length+width) = perimeter 2(x-12+x) = 240 2x-24+2x = 240 4x = 240+24 4x = 264 x = 66 Therefore: length = 54 feet and width = 66 feet
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