The length of FE is 58 and x = 8
From the triangle ;
We can obtain the value of x :
8x = 40 + 24
8x = 64
x = 8.
The length of FE = 6x + 10
Substituting x = 8
FE = 6(8) + 10
FE = 48 + 10
FE = 58
Hence, the length of FE is 58 and x = 8
Complete Question :
The value of x so the measure of DF = (8x-24) 40 . And the measure of FE = (6x+10)