Help..what is 2(4\3 πr^²)?

1 Answer
Phiri
May 2, 2018

#8/3pir^2#, #8.37r^2#, or #8.38r^2#, depending on if you use a value for pi (either 3.14 or pi on a calculator)

Explanation:

#2(4/3 pir^2)# First let's distribute the 2.
#8/3pir^2#

From here, there are 3 options:

  1. Leave the pi as #pi#, and the above value is your answer.
  2. Use 3.14 as #pi#, which will produce #628/75r^2#, or roughly #8.37r^2#.
  3. Use a calculator for #pi#, which will produce roughly #8.38r^2#.
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