A hollow shaft has a cross-sectional area 125.6cm2 and a bore of 8cm in diameter. Calculate the outer diameter of the shaft to 2s. f. With the explanations please

The outer diameter of the shaft to 2s.f is  12.65cm

Step-by-step explanation:

We know that the expression for the area of a circular cross section is

A=

given data

area of cross section=

bore diameter d= 8cm

from the area of cross section we can solve for the outer diameter D

solving for D we have

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: