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9216π cu in.

Step-by-step explanation:

Volume of sphere =     diameter = 48, so r = 24

V =   =

  = 4(4608)π

  = 18432π

Volume of the hemisphere is 1/2 of the volume of the sphere.  So,

18432π/2 = 9216π cu in.

300pi

step-by-step explanation:

required rate of return = 0.166 = 16.6%

step-by-step explanation:

under the capital asset pricing model (capm), the required or expected rate of return for a particular security or asset is given using the formula:

required rate of return = risk-free rate + beta*(market risk premium)

we are given that;

risk-free rate = 4% = 0.04

beta = 1.4

market risk premium = 9% = 0.09

we simply plug these values into the above formula;

required rate of return = 0.04 + 1.4*(0.09)

required rate of return = 0.04 + 0.126

required rate of return = 0.166 = 16.6%