Halving-reduce by half or think what is fifty% of the number or divide by two
doubling-add the number you got to the same number or multiply by two
Halving Ex.:6/2=3
Doubling ex.: 9+9=18 or 6*2=12
If your looking for Standard Form Rewrite it as...
Answer:
400
Step-by-step explanation:
just took the test lol

diameter = 4m
radius = 4/2
= 2m
volume = (3.14)(2^2)(6.3)
= 79.128m^3