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The width of a rectangle is 15cm less than the leght the perimeter is 98cm find the rectangle's dimensions?
Wiki User
∙ 14y ago
Suppose length is L cm. Then Width = L-15 cm
Perimeter = 2*(W+L) = 2*(L-15 + L) = 2*(2L - 15) = 4L - 30 cm
So 4L - 30 = 98 so that 4L = 128 and then L = 32 cm
Then W = L - 15 = 32- 15 = 17 cm.
So the rectangle is 32 cm * 17 cm
Wiki User
∙ 14y ago
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