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17 September, 14:45

A swimming pool is 18 meters long 14 meters wide and 5 meters deep. before it can be filled with water, it needs to be coated with water resistant paint.

- how many square meters of paint are needed to cover the pool?

- if water resistant paint needed for the pool cost $7.50 per square meter, how much would it cost to paint the pool

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  1. 17 September, 14:56
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    Surface area with no top

    SA=2H (L+W) + LW

    L=18

    W=14

    H=5

    SA=2 (5) (18+14) + (18) (14)

    SA=10 (32) + 252

    SA=320+252

    SA=572 squaer meters

    7.5 times of that

    $4290
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