Question

There are 15 risers in a set of stairs running from the basement to the first floor. Each riser is 7 1/4" high. What is the distance between floors?

Answer 1

The distance between the basement and the first floor, calculated by multiplying 15 risers by 7 1/4 inches per riser, is 108.75 inches.

Step-by-step explanation:

To calculate the distance between floors using the number of risers and the height of each riser, we multiply the number of risers by the height of one riser. There are 15 risers and each riser is 7 1/4 inches high. First, we convert 7 1/4 inches to a decimal for easier multiplication. 7 1/4 inches equals 7.25 inches. Now, multiply the number of risers by the height of one riser:

1. Multiply 15 (number of risers) by 7.25 inches (height of one riser).
2. 15 x 7.25 inches = 108.75 inches.

Therefore, the distance between the basement and the first floor is 108.75 inches.

Answer 2

Answer: 108.75 inches or 9.0625 ft

This is equivalent to 9 ft + 0.75 of an inch, or 9 ft + 3/4 of an inch

==========================================================

Work Shown:

7 & 1/4 = 7.25

Each riser is 7.25 inches tall

15 of them gives a total height of 15*7.25 = 108.75 inches

Divide that by 12 to convert to feet

108.75/12 = 9.0625 feet

9.0625 ft = 9 ft + 0.0625 ft

9.0625 ft = 9 ft + (0.0625 ft)*(12 inches/1 ft)

9.0625 ft = 9 ft + 0.75 inches

9.0625 ft = 9 ft + 3/4 of an inch