A set of average city temperatures in August are normally distributed with a mean of 21.25° C and a
standard deviation of 2°C.
What proportion of temperatures are between 19.63°C and 20.53°C?
You may round your answer to four decimal places.

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong

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!

1/8 is left? add a bit more info plz