Answer :
The value of the missing part of the triangle given above would be = 7.5. That is option A.
How to calculate the missing value of the given triangle?
To calculate the missing length of the similar triangle, the formula listed below should be used.
That is;
a/a+b = c/c+d
where a = 8
b = 10
c = 6
d = ?
That is;
8/8+10 = 6/6+d
make d the subject of formula;
8(d+6) = 6(18)
8d +48 = 108
8d = 108-48
8d = 60
d = 60/8
d = 7.5
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