Answer:
2,000. 90x20 is 1,800 and that is close to 2000.
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
He needs to give each of his friends 3 cards each
Answer:
Volume of hemisphere


Step-by-step explanation:
The formula for the volume of a hemisphere is 
Substitute the points and solve.
N.B.
has a value of either 3.14 or 
You can insert
directly into your calculator
You now have the volume of the hemisphere.
Density (given) is mass (what we are looking for) divided by volume (what we found in the first step)
Substitute the values.
Change subject.
Solve.
Have a nice day. :)
Answer:
D 483
Step-by-step explanation:
Option D is the correct answer.