Find the geometric mean of each set of numbers (Write answers in simplest radical form):
a) 15 and 20
b) 18 and 30

Answer:
Step-by-step explanation:
a.
G.M. between between 15 and 20=√(15×20)
=√(300)
=√(100×3)
=10√3
b.
G.M. between 18 and 30
=√(18×30)
=√(3×3×2×2×3×5)
=3×2√15
=6√15