Is p → ( q ⟶ r ) equivalent to ( p ⟶ q ) ⟶ r.

first quadrant =+,+

second quadrant = -,+

third quadrant = -,-

fourth quadrant = +,-

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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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