by cosine
.
1/2 = 25+4-x²)/20 x= √19
.
Down
.
-1/2 = a² +9 -19)/6a
.
a² +3a = 10 a=2

Solution plz @imgroooot @beingsakshamthakur

10/1.4× 58.8= 420

@imgroooot bhai btana

20 12 5:3 let base 1..2
.
5*1+2*3)/8 = 1.37
.
1= 1st column
.
162.5+ 5*.37= 164.3 (groot's method 🤘)

Ye chhota value h so u can also use deviation as sm sying
.
5:3
.
162.5 + 5*3/8 = 164.3