How much would it cost to paper the entire United States (including Alaska and Hawaii) with dollar bills? What would he the cost to each person in the United States?

Solution 63P Step 1: Length of 1 USD is, l = 6.14 inches 1 inch = 2.54 cm Therefore, 6.14 inches = 6.14 × 2.54 cm 15.6 cm Breadth of 1 USD is, b = 2.61 inches Therefore, 2.61 inches = 2.61 × 2.54 cm 6.63 cm 2 Hence, area of 1 USD, a = l × b = 15.6 cm × 6.63 cm = 103.43 cm Step 2: 2 Total land area of United States (including Alaska and Hawaii) , A = 3,537,436 km The number of dollar bills required for covering the entire land area, N = Total land area/ Area of 1 USD 2 We should convert the area of 1 USD into km units. 1 m = 100 cm 5 1000 m = 1000 × 100 cm = 10 cm 5 That is, 1 km = 10 cm Squaring both sides, 1 km = 10 cm 10 2 Therefore, 1 cm = 1/10 km10 2 10 2 Therefore, the area of 1 USD, a = 103.43/10 km a = 103.43 × 10 -10km 2