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A cylinder shaped sculpture is 24 meters high with a diameter of 6.8 meters. An artist plans to spray paint the entire surface with silver paint. If 1 can of spray paint covers 50 square meters, how many cans does the artist need to paint the sculpture?

  • math -

    Area of circle = πr^2

    Perimeter of a circle = 2πr

    Diameter = 2r

    Paint needed = (2πr^2 + 24[2πr])/50

    I'll let you do the calculations.

  • math -

    5 Cans
    SA=2B+PH
    SA=2(pi*r^2)+(2*pi*r)H
    SA=2(3.14*3.4^2)+(2*3.14*3.4)8
    SA=2*36.2984+21.352*8
    SA=72.5968+170.816
    SA=243.4128 ft^2

  • math -

    5 Cans
    SA=2B+PH
    SA=2(pi*r^2)+(2*pi*r)H
    SA=2(3.14*3.4^2)+(2*3.14*3.4)8
    SA=2*36.2984+21.352*8
    SA=72.5968+170.816
    SA=243.4128 ft^2
    CANS=243.4128/50=5 cans

  • math -

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