Answer:
9
Step-by-step explanation:

Answer:
Step-by-step explanation:
Area of a square
Area = l*l
121=l^2
l=√121
L=11cm
Answer:

Step-by-step explanation:
Variables and symbols:
- r = radius
- V = volume
- A = surface area
- C = circumference
- π = pi = 3.1415926535898
- √ = square root
Volume of a sphere in terms of radius:
, 
To calculate the volume of a sphere:
Usually the hardest part is measuring or estimating the diameter of the sphere. Special tools exist for smaller parts like balls in ball-bearings, but it gets more complicated if the size is large. Knowing that the diameter is the largest internal measurement you can take should help.
Once you have the measurement, to find the volume use the formula above, in which π is the well-known mathematical constant equal to about 3.14159. To adjust for a half-sphere calculation, just divide the result by two.
Spheres and half-spheres are useful in engineering and architecture due to their property of being able to take equal amounts of pressure or force from each direction.
Solution:

Round to nearest tenth: 
Answer:
a positive correlation is when both variables move in the same direction. a negative correlation is when the variables move in opposite directions. no correlation is when the variables are not statistically related
Step-by-step explanation:
negative correlation example: As you climb the mountain (increase in height) it gets colder (decrease in temperature).
zero correlation example: the amount of apple juice drunk and level of intelligence
btw you have a good example of positive correlation :) it can also be when both variables decrease