Math Ms.Sue???

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Find the surface area of the cone. Use 3.14 for pi. The diameter is 8in and the height is 7in please help asap!! And thank you for your time. Ms.Sue?

  • Math Ms.Sue??? -

    http://www.mathopenref.com/conearea.html

  • Math Ms.Sue??? -

    You will need the slant height s , the hypotenuse
    s^2 = 4^2 + 6^2 = √52

    surface area = πrs + (πr^2) , using the formula on Ms Sue's page
    = 4√52π + 16π

    You didn't state if the circular base is to be included, so ....
    your choice.

  • Math Ms.Sue??? -

    649.98 square feet

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