The scientific notation:


Used:

Answer: (4 × 10⁸)² = 1.6 × 10¹⁷
Answer:
A≈1385.44in²
Step-by-step explanation:
A=πr2=π·212≈1385.44236in²
A. The multiplier is (1 +.055/12)^12 ≈ 1.0564079
b. The multiplier is (1 +.054/365)^365 ≈ 1.0554804
c. The multiplier is e^.045 ≈ 1.0460279
The rate 5.5% compounded monthly is the better choice.