Question

Use the geometric mean (altitude) theorem. What is the value of m?

Answer 1

c is correct on edg. 4 is the square root of 10

Answer 2

The altitude is the mean proportional between the left and right parts of the hyptenuse

20/m = m/8
m² = 20 · 8
m² = 160
m = √160
m = 4√10