You kayak up a river at a rate of 90 feet every 30 seconds. You kayak 900 feet every 180 seconds on the way back down the river. How much farther do you kayak on the way down The river than up per second (show all decimal places)?

9.4.34  question   to estimate the height of a stone  figure, an observer holds a small square up to her eyes and walks backward from the figure. she stops when the bottom of the figure aligns with the bottom edge of the  square, and when the top of the figure aligns with the top edge of the square. her eye level is 1.811.81 m from the ground. she is 3.703.70 m from the figure. what is the height of the figure to the nearest hundredth of a  meter?