Answer:
A rea of a Circle = π × r²
Step-by-step explanation:
The area of a circle formula is A = π × r² where r is the radius.
Remember that the radius might not be given but the radius is half of the diameter.
For π use the calculator value or use 3.14.
Answer:
y=4x
Step-by-step explanation:
I hope this answers your question.
Answer:
I think you meant to put an attachment but I don't see one
Step-by-step explanation:
Answer:
-3x+30
Step-by-step explanation:

Expand 

Simplify 
