Answers

2014-09-22T21:53:53+08:00
10 1/2 = 21/2
8 3/4 = 35/4

21/2 + 35/4 =( 2(21)+35)/4 
= (42+35)/4 = 77/4

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2014-09-22T21:56:34+08:00
10 1/2 x 8 3/4 = 91 7/8 m²
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