24. A rectangular sheet of plastic has dimension 40 cm x 25 cm. 224 circular buttons
of diameter 2 cm are cut out from this sheet. The area of the sheet len out is
(a) 593 28 cm
(6) 298.84 cm2
(c) 444.96 cm
(d) None of the above
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Step-by-step explanation:
Area of sheet =40×25 cm
2
=1000 cm
2
Area of button =3.14×1×1 cm
2
=3.14 cm
2
Area of 224 buttons =224×3.14cm
2
=703.36cm
2
Area of sheet left out =(1000−703.36)cm
2
=296.64cm
2
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