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anonymous

  • 5 years ago

A rectangular counter 3 feet wide and 5 feet long has a circle cut out of it in order to have a sink installed. The circle has a diameter of 18 inches. What is the approximate area of the remaining countertop surface? Use 3.14 for pi. A)13.2 ft2 B)29.5 ft2 C)18.9 ft2 D)15.0 ft2

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  1. anonymous
    • 5 years ago
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    so you know you have a rectangle and you want to subtract a circle You can figure out the area of the rectangle and the area of the circle given the information in the problem if you know the right formulas.

  2. anonymous
    • 5 years ago
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    What is the area of the the rectangle and what is the area of the circle?

  3. anonymous
    • 5 years ago
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    okay and after I figure out both of their areas, what is the next step?

  4. anonymous
    • 5 years ago
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    subtract the area of the circle from the area of the rectangle, but make sure that they both have the same type of units.

  5. anonymous
    • 5 years ago
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    Since all of the answer choices are given in terms of ft^2, you should convert everything the ft before you start the problem.

  6. anonymous
    • 5 years ago
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    I dont really understand , can you please show me?

  7. anonymous
    • 5 years ago
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    What don't you understand?

  8. anonymous
    • 5 years ago
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    how to solve it really? okay so I got 15 for the area of the rectangle and for the circle I got 254.34 so now what? Im really confused!

  9. anonymous
    • 5 years ago
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    what units did you solve for each area in? Units are important.

  10. anonymous
    • 5 years ago
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    just the formula for area of a circle and rectangle, idk what you mean.

  11. anonymous
    • 5 years ago
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    what is the formula for the area of a circle?

  12. anonymous
    • 5 years ago
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    Circle Area = πr2

  13. anonymous
    • 5 years ago
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    A=πr^2

  14. anonymous
    • 5 years ago
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    A=πr^2

  15. anonymous
    • 5 years ago
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    thats what i meant squared..oops!

  16. anonymous
    • 5 years ago
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    what did you use for r?

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