Answer:
c
Step-by-step explanation:
Tangent always meets radius at 90° angle.
Angle ABC = 90° so Pythagoras' theorem applies.
r² + 4² = (r+2)²
r² + 16 = r² + 4r + 4
12 = 4r
r = 3
The straight line graph is the one that shows a direct, proportional relationship.
Answer:
18
Step-by-step explanation:
To continue where you left off, ...

The square root of 324 is 18.