Answer:
D. 8
Explanation:
The given diagram is a trapezium. We know that the consective sides of a trapezium are equal. so,
Putting the values of consecutive sides equal:
So, KI will be equal to LI
3x-7 = x+3
![3x-7-x=x+3-x\\2x-7=3\\2x-7+7=3+7\\2x=10\\x=5](https://img.qammunity.org/2020/formulas/mathematics/middle-school/192jawdai0ir1kpmdntuignt8d285lt2du.png)
Putting the value of x in the equation of KI
3x-7
=3(5)-7
=15-7
=8
Hence, the correct answer is D. 8 ..