A rectangular acrylic sheet is 36cm by 25cm. From it, 56 circular buttons, each diameter 3.5cm have been cut out. Find area of the remaining sheet......
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Step-by-step explanation:
Area of the rectangular sheet : 36*25= 900cm
Area of the single button : 22/7 *3.5/2 *3.5/2=9.625cm
Area of 56 buttons :9.625*56=539
Area of the remaining sheet : 900-539=361cm
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Diameter - 3.5
Radius - 3.5/2 = 1.75
Area of Circle - pie x r^2 = 22/7×1.75^2 = 9.61625 cm^2
Area of 56 circular buttons = 9.61625×56 = 538.52 cm^2
Area of sheet = lb = 36×25 = 900cm^2
Reamaining Area = 900-538.52 = 361.48cm^2
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