Answer:
21 cm.
Step-by-step explanation:
V = π r^2 h
1029π = π * 7^2 * h The π is common so:
1029 = 7^2 h
h = 1029 / 49
= 21 cm.
Height is 21cm
Volume of the cylinder = 1029pi
Base area = 7x7xpi = 49pi
Therefor the height = 1029pi/49pi=1029/49 = 21cm
Complete the square
+ 2x - 13 = 0
+ 2x = 13
+ 2x + = 13 +1 (take 1/2 of the b term , the 2 )
+ 2x + 1 = 14
(x +1)^2 = 14
the answer is B. 8
just look at the graph and see where the line touches the x axis, that's the zero
28.27 or 28 rounded up.
Answer: Circle