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A physical therapy facility is building a new pool that is 80 feet long and 5 feet deep. They have ordered enough tile for a 300-foot-long border around the edge. How wide should the pool be ensure that all tiles are used?

A physical therapy facility is building a new pool that is 80 feet long and 5 feet deep They have ordered enough tile for a 300footlong border around the edge H class=

Respuesta :

Since there are 300 foot long border around the edge, that means perimeter is 300 ft.

Perimeter is also the sum of all sides of the rectangle above:

b + b + w + w = 300

80 + 80 + 2w = 300

160 + 2w = 300

2w = 300 - 160

2w = 140

w = 140/2

w = 70 ft

So our final answer will be:

[tex]w=70ft[/tex]

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