Volume of a cylinder= π r^2 h
.4= radius
π• 4^2 • 3= 150. 79
Answer:

Step-by-step explanation:
In order to add or subtract numbers in scientific notation, the powers of ten must have the same exponent. In this caes the diameter of an average human body cell is a power of -4 and the diameter of a plant cell is a power of -3. In order to add them, we can move the decimal over for the body cell diameter:

Add the two values: 
Answer:
A
Step-by-step explanation:
y=(x+13)^2-14
ygjgjfkifkdkekekrirf
Answer:
x=20
y=70/3 which is about 23.3
Step-by-step explanation:
Write a proportion of all similar sides