Hello!
To find the area of a circle you do

the "r" stands for radius which is half the diameter
So we do

Which gives us the answer of 314.16
Hope this helps!
Answer:
option a is the answer
Step-by-step explanation:
put the value of x in each expression as x = -2
you'll see that in option a the expression becomes

which is not defined. hence -2 is excluded value
The answer would be -105. If you multiply 7 x -15 it would give you -105 and then you would have to divide -105 by 7 and its equal to -15.
The answer is 3+-i
I hope this helps!!!!!!!!
Answer:
x=4200
Step-by-step explanation:
10x=42000
x=4200