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A sheet of rectangular paper measures 12 cm by 20 cm. At the
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09 Oct 2020, 04:45
09 Oct 2020, 04:45
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Question Stats:
80% (01:18) correct
19% (01:55) wrong based on 117 sessions
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A sheet of rectangular paper measures 12 cm by 20 cm. At the edge of the paper, a margin exactly 1-cm wide is painted all the way around. What percentage of the area of the original rectangle remains unpainted?
A. 95%
B. 90%
C. 85%
D. 80%
E. 75%
A. 95%
B. 90%
C. 85%
D. 80%
E. 75%
Re: A sheet of rectangular paper measures 12 cm by 20 cm. At the
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12 Oct 2020, 09:33
12 Oct 2020, 09:33
2
The 1cm around margin will be the length minus 2 and the breadth also minus 2
Original area is 12*20=240
Unpainted area is 10*18=180
Percentage area is 180/240*100=75%
Posted from my mobile device
Original area is 12*20=240
Unpainted area is 10*18=180
Percentage area is 180/240*100=75%
Posted from my mobile device
Re: A sheet of rectangular paper measures 12 cm by 20 cm. At the
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29 Sep 2025, 06:08
29 Sep 2025, 06:08
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