the length of a rectangular pool is three times its width. The perimeter of the rectangular pool is 168 feet. find the length an
2 answers:
<em>w = 21 feet</em>
<em>l = 63 feet</em>
- Step-by-step explanation:
<em>l = 3w</em>
<em>P = 2(l + w)</em>
<em>168 = 2(l + w) : 2</em>
<em>84 = l + w</em>
<em>replace l</em>
<em>84 = 3w + w</em>
<em>4w = 84</em>
<em>w = 84 : 4</em>
<em>w = 21 feet</em>
<em>l = 3w</em>
<em>l = 3×21 feet</em>
<em>l = 63 feet</em>
Step-by-step explanation:
breadth = 21 m
length = 63 m
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