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Solve the Problem 1 cm21 \mathrm {~cm} ^ { 2 } to Do This, You Need to Know How Much

Question 140

Multiple Choice

Solve the problem.
-You are asked to make some circular cylinders, each with a cross-sectional area of 1 cm21 \mathrm {~cm} ^ { 2 } . To do this, you need to know how much deviation from the ideal cylinder diameter of x0=1.99 cmx _ { 0 } = 1.99 \mathrm {~cm} you can allow and still have the area come within 0.1 cm20.1 \mathrm {~cm} ^ { 2 } of the required 1 cm21 \mathrm {~cm} ^ { 2 } . To find out, let A=π(x2) 2A = \pi \left( \frac { x } { 2 } \right) ^ { 2 } and look for the interval in which you must hold xx to make A1<0.1| A - 1 | < 0.1 . What interval do you find?


A) (1.8974, 2.0976)
B) (1.0705, 1.1835)
C) (0.7569, 0.8368)
D) (0.5642, 0.5642)

Correct Answer:

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