#r^3=27/8# How do you solve for r?

#r^3=27/8# HOW DO I SOLVE FOR R, because I know I can solve for exponent by using log but since this is the base how would i do it? step by step, please!

2 Answers
landon3
Feb 3, 2018

#r=3/2=1.5#

Explanation:

  1. Take the cube #root# of Both Sides.

#r=3-:2#

Becuase the Cube root of #27# is #3#

And The Cube root Of #8# is #2#

#r=3/2=1.5#

Nam D.
Feb 4, 2018

#r=1.5#

Explanation:

#r^3=27/8#

Notice how,

#r^3=(3/2)^3#

#:.r=3/2#

#r=1.5#

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