Question

A machinist is required to manufacture a circular metal disk with area 500 cm2.
(a) What radius produces such a disk? (Round your answer to four decimal places.)


cm

(b) If the machinist is allowed an error tolerance of ±7 cm2 in the area of the disk, how close to the ideal radius in part (a) must the machinist control the radius? (Round your answers to four decimal places.)
cm < r < cm

Answer 1

i need help with the second part

Answer 2

a) Because area=pi*r^2 Solve for r (r=12.6157)
b) To solve the second part, do the same thing you did for part a using areas 507 and 493. Does that make sense?

Answer 3

okaay thanks you :)

Answer 4

my pleasure!

Answer 5

(c) In terms of the ε, δ definition of
lim
x→a
f(x) = L,
what is x?
area
target radius
radius
target area
tolerance in the area

Answer 6

can you explain this to me

Answer 7

I'm sorry, I can't! You just went beyond my ability level :) Good luck!

Answer 8

thanks anyways

Answer 9

of course!