Answer:/Step-by-step explanation:
We would apply pythagorean theorem to find the variable in each triangle.
Pythagorean theorem is given as: c² = a² + b², where c is the hypotenuse length or longest leg while a and b are the two other legs.
Thus:
a. h² = (√20)² + 4²
h² = 20 + 16
h² = 36
h = √36
h = 6 units
b. t² = 9² - (√17)²
t² = 81 - 17
t² = 64
t = √64
t = 8 units
c. h² = (√8)² + (√8)²
h² = 8 + 8
h² = 64
h = √64
h = 8
