Answer:

Step-by-step explanation:
Given

Required
Find V when

Substitute
for r in 

Open bracket


Simplify the fractions

Let

So:




You always either divide the equation or multiply the equation
hope this helps
Answer:
True
Step-by-step explanation:
Answer:
30 square inch
Step-by-step explanation:

Answer:
2 and a half @ 2.5 inches (sorry i can't type the fraction)
Step-by-step explanation:
- english is my second language so sorry if you doesn't understand:
(1/2, 1/4)=(x,y)
based on the graph shown that each grid on the y axis represents 1/4, that is the smallest scale stood in the y axis.
this means 2 grid= 1/4 x 2 = 1/2 @ 0.5 inches.
since the '5 months-hair-length' is above about 2 grid above 2 inch:
2 inch + 0.5 inch= 2.5 inch