Math

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1 litre can of paint covers 11m squared. How many cans of paint would you need to cover a perfectly square ceiling that has a side length of 5.2 m?

If paint caosts $29.95 per can and there is a 12% tax. How much would it cost to paint the ceiling?

  • Math -

    Hold it! im going to try this myself but i want someone to check if i did it right:

    5.2 x 5.2 = 27.04

    11 x 3= 33
    You would need 3 cans of paint.

    27.04 x 3 = 81.12

    ok now im stuck... how do you do this part::If paint caosts $29.95 per can and there is a 12% tax. How much would it cost to paint the ceiling?

  • Math -

    5.2 * 5.2 = 27.04 square meters

    27.04 / 11 = 2.46 = 3 cans of paint

    (3 * 29.95) * 1.12 = ?

  • Math -

    OOPS oh so is this how you do it:: 29.95 x 3= 89.85x 1.12 = $100.632

    i just have one question: where did the 1.12 come from?

  • Math -

    1.12 = 112%

  • Math -

    Nope it would be 1.12=12%
    if you are going to follow this way
    29.95 x 0.12=3.594
    so look here 29.95 + 3.594=33.544
    29.95 x 1.12 =33.544

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