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7 November, 10:21

The tray is 90 cm x 40 cm. Each plate has a radius of 8 cm. There needs to be a 2 cm gap around each plate. How many plates can Nicola fit on the tray?

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  1. 7 November, 10:54
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    Answer: 10 plates

    Step-by-step explanation:

    The radius of one plate is 8, which implies its diameter is 16.

    There must be a 2 inch gap between plates so 16 + 2/2 = 17 cm is how much room each plate needs.

    The tray is 40 cm wide. How many 17 cm plates can you fit in that width? 2

    The tray is 90 cm long. How many 17 cm plates can you fit in that length? 5

    The number of plates that fit on the tray is rows x columns (length x width)

    = 2 x 5

    = 10
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