Answer:
Step-by-step explanation:
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There is 150% increase in the number of volunteers.
Step-by-step explanation:
Given,
Old number of volunteers = 20
New number of volunteers = 50
Change = New value - Old value
Change = 50 - 20 = +30
The positive sign indicates the increase.
Percent increase = 

There is 150% increase in the number of volunteers.
Keywords: percentage, subtraction
Learn more about percentages at:
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The area of a circle is given by

If you want to approximate pi with 3.14, the formula becomes

Answer:
First do 6+7 (PEMDAS), plus 2 and then plus 54
2+(-11) is -9
Answer:
1/6 or 0.1666666667%
Step-by-step explanation:
The probability of getting a 6 would be 1/6. There are 5 other sides the die could land on.