As many 8-cm diameter discs as possible are cut from a sheet of rectangular cardboard measuring 170 cm by 90 cm.How can I find the area of the sheet that is left?
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There can fit 170/8 or 21 full discs along the dimension of 170cm.
On the dimension of 90cm, 90/8 or 11 full discs fit.
Total number of discs = 21*11= 231.
Area of all discs = 231*22/7* (8/2)^2 = 81312/7 cm^2
Area of the sheet = 170*90= 15, 300cm^2
Area of sheet remaining = 25,788/7 cm^2
On the dimension of 90cm, 90/8 or 11 full discs fit.
Total number of discs = 21*11= 231.
Area of all discs = 231*22/7* (8/2)^2 = 81312/7 cm^2
Area of the sheet = 170*90= 15, 300cm^2
Area of sheet remaining = 25,788/7 cm^2
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