A machinist is required to manufacture a circular metal disk with area 864 cm². Give your answers in exact form. Do not write them as decimal approximations. a) What radius, x, produces such a disk? b) If the machinist is allowed an error tolerance of ±5 cm² in the area of the disk, how close to the ideal radius in part (a) must the machinist control the radius? ¯)(√ 2-√ a = L 861 π E 5 c) Using the ε/ definition of a limit, determine each of the following values in this context: f(x) 2 TX =856 856 π 856 π 861 856 π π X X OF 856 T 851 π 856 851 ³- {(√²-√²)(√²-√² )}, 8 T 856 π X X π

Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
Chapter8: Areas Of Polygons And Circles
Section8.4: Cicumference And Area Of A Cicle
Problem 13E: A metal circular disk whose area is 143 cm2 is used as a knock out opening on an electrical service...
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A machinist is required to manufacture a circular metal disk with area 864 cm². Give your
answers in exact form. Do not write them as decimal approximations.
a) What radius, x, produces such a disk?
b) If the machinist is allowed an error tolerance of ±5 cm² in the area of the disk, how
close to the ideal radius in part (a) must the machinist control the radius?
a
861
π
ε =
5
L = 856
2
TUX
856
TU
c) Using the ε/ definition of a limit, determine each of the following values in this
context:
f(x)
856
-√³)(√²-√²¹ )} *
X
π
856
861
π
π
X
X
851
856
π
π
856
851
³- {(√²-√²)(√²+ -√² )},
8
π
π
856
π
JE
X
Transcribed Image Text:A machinist is required to manufacture a circular metal disk with area 864 cm². Give your answers in exact form. Do not write them as decimal approximations. a) What radius, x, produces such a disk? b) If the machinist is allowed an error tolerance of ±5 cm² in the area of the disk, how close to the ideal radius in part (a) must the machinist control the radius? a 861 π ε = 5 L = 856 2 TUX 856 TU c) Using the ε/ definition of a limit, determine each of the following values in this context: f(x) 856 -√³)(√²-√²¹ )} * X π 856 861 π π X X 851 856 π π 856 851 ³- {(√²-√²)(√²+ -√² )}, 8 π π 856 π JE X
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