If `a:b=2:3 and b:c=1:2`then find `a:b:c`

If a:b=3:5 and b:c=6:7 ,find a:b:c

If A:B = 1:3 and B: C = 2:5. find A:C.

If A:B = 2:7 and B:C = 9:13, find A:C.

If A:B=3:4 and B:C=2:3 , find A:B:C .

If a:b:c=2:3:4, find a,b and c

If a:b=1:2 , find the angle c and b

(i) If a^(2)+b^(2)+c^(2)=20 " and" a+b+c=0, " find " ab+bc+ac . (ii) If a^(2)+b^(2)+c^(2)=250 " and" ab+bc+ca=3, " find" a+b+c . (iii) If a+b+c=11 and ab+bc+ca=25, then find the value of a^(3)+b^(3)+c^(3)-3 abc.

If a = 2, b = 3 and c = -2, find the value of a^(2)+b^(2)+c^(2)-2b-2bc-2ca+3abc

If a+b+c=2, ab+bc+ca=-1 and abc=-2 , find the value of a^(3)+b^(3)+c^(3) .

If a = 3, b = 2 and c = -4, find the values of: 3ab-3b^(2)+4abc