MATH: THE RELATIOSHIP BETWEEN CIRCUMFERENCE AND AREA.
A BUTTON HAS A DIAMETER OF 0.80 INCHES.
WHAT IS THE EXACT AREA OF THE BUTTON IN TERMS OF PI (π)?
A= πR2
1. A. L0.16π IN2
2. B. 0.40π IN 2
3. C. 0.64π IN 2
4. D. 0.80π IN 2
The radius of the button is half of the diameter, so the radius (R) is 0.40 inches.
Plugging this into the formula A = πR^2, we get:
A = π(0.40)^2
A = π(0.16)
A = 0.16π in^2
Therefore, the exact area of the button in terms of π is 0.16π in^2, which corresponds to option A.