a 12 ft by 15 ft swimming pool has a 3 ft wide no slip surface around it. what is the outer perimeter of the no slip surface?

Mathematics

1 answer:

BartSMP [9]2 years ago

3 0

Just add 3 to each dimention twice for each side

12+3+3=18
15+3+3=21

perimiter=2(L+W)
P=2(21+18)
P=2(39)
P=78
aswer is 78ft

see attachmetn for help

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$We\ can\ observe\ that:\\The\ polygon\ is\ an\ octagon\ as\ it\ is\ bounded\ by\ 8\ linear\ sides.\\Hence,\\We\ know\ that,\\The\ Interior\ Angle\ Sum\ of\ a\ polygon\ with\ n\ is\ given\ by\ the\ formula:\\Interior\ Angle\ Sum=180(n-2)\\Hence,\\As\ we\ already\ know\ that,\\The\ number\ of\ sides\ in\ this\ polygon=n=8\\Hence,\\The\ Interior\ Angle\ Sum\ Of\ An\ Octagon=180(8-2)=180*6=1080\\$

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