Geometric Mean 8.1

Find the length of AB.

(a)  

How far is it across the lake?

(a)  

In the accompanying diagram of right triangle ABC, CD is drawn perpendicular to hypotenuse AB. If AB=16 and DB=4 find the length of BC.

• 0

• 8

• 32

• 64

Find the value of x.

• 12

• 16

• 9

• 6

What is geometric mean of 4 and 9?

• 5
• 6
• 7
• 8

What if the value of x?

• 16
• 12
• 4
• 64

What is the value of f?

• 20
• 15
• 25
• 50

Find the value of x.

• 15√5

• 5√5

• 5√3

• 3√5

√48

• 4√2

• 6√3

• 4√3

• 4√2

Find the geometric mean for 5 and 8

• 4
• 10
• 2√10
• 4√10