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primary 6 | Maths | Measurement
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Nicole
Nicole

primary 6 chevron_right Maths chevron_right Measurement chevron_right Singapore

Is question b correct? Thank you.

Date Posted: 5 years ago
Views: 337
AC Lim
AC Lim
5 years ago
8×13=104
Need to time 2 (×2) top and bottom.
AC Lim
AC Lim
5 years ago
Alternatively, you can do this way...
15-2=13
10-2=8
12-2=10
Total cube 15×10×12=1800
Total cube didn't the touch the side = 13×8×10=1040
Total cube touch the side=1800-1040 =760
Hope this helps.
Cindy
Cindy
5 years ago
May I know should we deduct the top as it is an open rectangular box?
AC Lim
AC Lim
5 years ago
Oops. You are right. Since it is open rectangular box but didn’t mentioned open at which side, assume top open. Top should not included. You answer is correct.
Cindy
Cindy
5 years ago
Thank you.

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Total cube touch the side 1800-1040=760
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Nicole
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