Answer:
Graph C
Step-by-step explanation:
This method can be very useful, so please try to remember it
The value of x is –2, 1, or 3 only.
<h3>What is graph?</h3>
Graph is a mathematical representation of a network and it describes the relationship between lines and points.
To find the roots by the graph we have to look at the graph at which at the x-axis the curve of the graph touches.
Here, the curve touches at -2, 1 and 3.
Learn more about graph here:
brainly.com/question/11917345
#SPJ1
C = (1/3)π r² h
270π = (1/3)π r² (10)
81=r²
r=9 cm
S = (4/3)π r³ = (4/3)π 9³ = 972 π
Total volume = S + C = (972+270)π = 1242π
Answer: 1242 π cubic cm