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Anonymous
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2R = 2.5 inch x 3.5 inch
3p9
The same as the dimension of R
If 3p-5=9-4pthen 3p+4p=9+5=14then 7p=14and p=14/7so p=2Proof:(3 x 2)-5=19-(4 x 2)=1
12-2r = 10