# Math

1.
Use 3.14 for pie to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary. (the diameter is 16.8)
2. Find the missing length. Round to the nearest tenth, if necessary. (7,19)

1. 👍 7
2. 👎 0
3. 👁 2,655
1. 1. r = 8.4
area = π(8.4)^2 = 221.67 to the nearest hundredth using a proper value of π
(nobody uses 3.14 anymore, that is so 1960's,
if you did it would be 221.56 , quite an error)

#2, - incomplete

1. 👍 2
2. 👎 6
posted by Reiny
2. The answer is 221.56 because they didn't want you to use ~ they wanted you to use 3.14. Reiny a lot of people still use 3.14 because they teach it in school.

1. 👍 14
2. 👎 3
posted by C.P

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