terrickpatterson terrickpatterson

11-04-2016
Mathematics

contestada

The oven tray is 600mm by 500mm. A cake tin is 25cm in diameter. How many cake tins can jenny fit on the oven tray at one time?

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Татьяна Татьяна

11-04-2016

600 mm = 60 cm
500 mm = 50 cm
S1 = 60 * 50 = 3000

S = πR²
R = 1/2 D = 1/2 * 25 = 12,5
S2 = 3,14 * 12,5² = 490,625

S1 : S2 = 3000 : 490,625 = 6,1146

Answer: 6.

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