Most drop towers require child riders to exceed a minimum height; limits vary widely depending upon the nature of the tower, with a 30-foot (9 m) tower for smaller children from 37 inches (95 cm) tall, and a 115-foot (35 m) tower having a 51-inch (130 cm) restriction.
How many sheet of copy paper equal an inch? Using good quality 24 pound paper, a one inch thick stack is about 215 sheets. Using the more common 20 pound paper - popular in schools - one inch is about 250 sheets. Edit
This ream of 500 sheets (20 quires of 25 sheets) is also known as a 'long' ream, and is gradually replacing the old value of 480 sheets, now known as a 'short' ream. Reams of 472 and 516 sheets are still current, but in retail outlets paper is typically sold in reams of 500.