Question

What is the geometric mean of 7 and 12?
a.1
b.9.5
c.2√21
d.4√21

Answer 1

The correct answer is option B. i..e 9.5 The geometric mean of any two numbers a and b is given as the squareroot of the product of a and b. Thus, the geometric mean of 7 and 21 is sqrt(7*12) = sqrt(84) = 9.16 ~ 9.5

Answer 2

Answer:

C. $2\sqrt{21}$

Step-by-step explanation:

dcbac