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18 March, 19:46

A cylindrical storage tank has a depth of 9 ft and a radius measuring 2 ft. The tank needs to be painted. If 1 pint of paint covers 50 ft2 and you can only purchase full pints of paint, how many pints must be purchased to paint the exterior of the storage tank?

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  1. 18 March, 22:20
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    Answer: 3 pints of paint

    Step-by-step explanation:

    Hi, to answer this question we have to apply the next formula:

    Surface area of a cylinder: 2 π r2 + 2 π r h

    Where r is the radius and h is the height of the storage.

    Replacing with the values given:

    SA = 2 π (2) ^2 + 2 π (2) 9

    SA = 2 π (4) + 2 π 18

    SA = 138.23 ft2

    Since 1 pint of paint covers 50 ft2, we have to divide the surface area by the area that each pint of paint covers:

    138.23 / 50 = 2.76 = 3 pints of paint

    Feel free to ask for more if needed or if you did not understand something.
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