Answer:
#1
This is the isosceles right triangle as one of the angles is 45°.
The second leg is same as the first and the hypotenuse is √2 times the leg.
#2
This is the 30°x60°x90° triangle and the ratio of sides is:
Since the hypotenuse is 16, the other sides are:
#3
Geometric mean of two numbers is the square root of their product.
- √9*6 = √54 = 7.3 (rounded)
Correct choice is C
