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kay4451
17.04.2020 •
Mathematics
A construction company charges $50, per square feet for building floors. How much will it cost to build a floor with radius 10 ft. use the dollars sign in your answer. Use π = 3.14
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Ответ:
$15700
Step-by-step explanation:
To find the cost, you multiply $50 by the area of the floor. The floor must be a circle ("radius"), so to find the area of a circle, use the formula![A=\pi r^2 \\ A=\pi(10)^2 \\ A=(3.14)(100)=314\text{ square feet}](/tpl/images/0608/1408/a81f7.png)
Multiply 314 sq. ft. by the cost per sq. ft.
314 x 50 = 15700
Ответ: