It is C because 4 pi r^2 is the surface area equation. 4 times 6 squared= 144. 144pi = surface area.
Answer:

Step-by-step explanation:
A=b^2+2bh
b = 3
A = 3^2 + 2(3)h
A = 9 + 6h
6h = A - 9

Answer:
X = 3
You're welcome.
Step-by-step explanation:
Hey! Answer to this would be 13/24.
Answer: $27.20
Step-by-step explanation:
She bought a blouse for 20% off so it means that she paid 80% of the original price.We can then set up the equation
80% of x = 21.76 where x is the original price so solve for x
0.8x = 21.76
x = 27.20
Which means the original price is $27.20