If you notice the terms, they're
7, -21, 63, -189 and so forth.
7*-3 = -21 and -21 * -3 is 63 and so forth, meaning the "common ratio" is -3.
now, for a common ratio say "r", which is a fraction, namely less than ±1 and more than 0, or |r| < 1 , you do have a convergent sequence.
however this one notice, |-3| is 3, and that's greater than 1 clearly, therefore is divergent, meaning the summation has no finite value.
One cylinder has two bases and one side, and the side is a rectangle.
So S = 2*base + side
S = 2* (pi*27^2) + (2*pi*27*37) = 3456pi
Answer:
3
Step-by-step explanation:
because there are only three pictures
i think it would be your first choice
