If m∠A = m∠B and m∠A + m∠C = m∠D, then m∠B + m∠C = m∠D.

Which property is shown?

reflexive property
substitution property
symmetric property
transitive property

step-by-step explanation:

so then what are you asking?

step-by-step explanation:

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!