+1224 3.141 * 15^2 * 18/3 = 4240.35
This is the exact answer, so there is actually no need for rounding.
+17 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.
