Approximately how many pennies would you have to stack to reach an average 8-foot ceiling? A) 2 × 10² B) 2 × 10³ C) 2 × 10⁴ D) 2 × 10⁵ E) 2 x 10⁶

Question

Quizplus · Accepted Answer

A penny is about 1.52 mm thick. An 8-foot ceiling is approximately 2438.4 mm (8 feet x 304.8 mm/foot). Dividing 2438.4 mm by 1.52 mm/penny gives approximately 1604 pennies, which is closest to 2 × 10³.

Approximately How Many Pennies Would You Have to Stack to Reach