from a rectangular sheet of acrylic of dimensions 32cm by 24 cm,64 circular buttons,each of diameter 3.5 cm have been cut out .find the area of the remaining sheet
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richie51:
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Area of the rectangular sheet = length×breadth
= 34×24
= 816cm²
Area of each button = πr²
= 22/7 × 3.5/2 × 3.5/2
= 9.625cm²
Area of 64 buttons = 64×9.625 = 616cm²
Area of the remaining sheet = area of the sheet - area of 64 buttons
= 816 - 616
= 200cm²
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