Answer:
c = 5
Step-by-step explanation:
The Pythagorean theorem states that in every right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the respective lengths of the legs. It is the best-known proposition among those that have their own name in mathematics.
Pythagoras theorem
In every right triangle the square of the hypotenuse is equal to the sum of the squares of the legs.
If in a right triangle there are legs of length a and b the measure of the hypotenuse is c then the following relation is fulfilled:

With a = 3 and b = 4

The area of the circle is πr², ie. 144π.
The volume of the cilinder is 12×144π = 1728π cm³.
I vote for answer A.
Answer:
Es igual a 28,26 centímetros2.
Step-by-step explanation:
Answer:
144
Step-by-step explanation:
12x12=144