In the given figure, AB//DC, Prove that: ∆AED = ∆CEB.

1. supplementary angles

2. acd and bcd

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.

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