Answer:
The volume is 
Step-by-step explanation:
we know that
The volume of the hemisphere ( a greenhouse room) is equal to

In this problem we have

substitute

Hi there!
10% as a decimal is 0.1
To find the decimal of a percentage, just divide the percentage by 100.
10/100 = 1/10 = 0.1
I hope this helps!
Hello!
You solve this like an algebraic equation
You first distribute the 4 and 2
4x - 20 = 2x - 20 + 2x
Combine like terms
4x - 20 = 4x - 20
subtract 4x from both sides
-20 = 0x - 20
Add 20 to both sides
0 = 0
This means that there are infinite solutions to the equation.
Hope this helps!