I dont know why it says im in high school im in middle school. But anyways can someone please explain how to get percentage.

What is the square root of 45? (step by step working plz)

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Which best describes the construction of a triangle if given the segment lengths of 2 cm, 3 cm, and 5 cm? a) unique triangle b) cannot be determined c) triangle not possible d) more than one triangle