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Round to nearest hundredth.... 3.141*15^2*18/3

 Feb 5, 2022
 #1
avatar+1224 
+2

3.141 * 15^2 * 18/3 = 4240.35

 

This is the exact answer, so there is actually no need for rounding.

 Feb 5, 2022
 #2
avatar+17 
+2

Since \(3.141*15^2 * \frac{18}{3} = 3.141 * 225 * 6 \) (1)

\(= 3.141*5 * 45 * 2 * 3 \)(2)

\(= 3.141 * 45 * 3 * 10\)(3)

\(= 31.41 * 135\)(4)

\(= 4240.35\)(5)

Note that from step 3 or 4, we found that we don't need to round it to the nearest hundredth because that is what the answer is in and step 5 tels us the answer.

 Feb 5, 2022

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