Mathematics Knowledge第 59 / 120 题
A rectangle has a length of 8 and a perimeter of 26. What is its width?
a.4
b.6
c.5
d.9
解析
The perimeter equals twice the length plus twice the width. So 26 minus 2 times 8, which is 16, leaves 10 for the two widths. Dividing 10 by 2 gives a width of 5.
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