Answer : The length of QT is 19.
Step-by-step explanation :
As we are given:
Length of RT = 11
Length of RS = 8
As we are given that R is the mid-point of line QS. That means,
Length of RS = Length of QR = 8
Now we have to calculate the length of ST.
Length of ST = Length of RT - Length of RS
Length of ST = 11 - 8
Length of ST = 3
Now we have to calculate the length of QT.
Length of QT = Length of QR + Length of RS + Length of ST
Length of QT = 8 + 8 + 3
Length of QT = 19
Therefore, the length of QT is 19.