The speed of 10 cars on a certain highway stretch was recorded below. If the mean of
the data is 63.2 with a standard deviation of
6.2, circle all data values with a z-score less
than 0.5.
{49, 58, 60, 63, 64, 64, 65, 67, 70, 72}

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

0lz try yourself sorry for not answering

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!