Idol - 33.68 = blue hope
79.2 - 33.68= 45.52 carats <----- Answer
Hello,
(3,5,7) is the alone solution.
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I will give you my solution down here
3x-x=2+4
2x=6
x=3
Exact Form: 
Decimal Form: 4.6 repeating
Mixed Number Form: 
Area,Lateral surface Area, Surface Area, Circumference?
What do you want me to find?