the distance between two floors is 9'-0 1/2” if 14 risers are to be used in a set of stairs what is the height of each riser

Height of each riser = 7.75 inches

Step-by-step explanation:

We are told that the distance between two floors is 9'-0 1/2”. This is 9ft 0.5inch

Let's convert to inches.

From conversion values, we know that 1ft = 12 inches

Thus, 9ft = 9 × 12 inches = 108 inches

Thus, total distance between two floors = 108 + 0.5 = 108.5 inches

Now,we are told there are 14 risers between this two floors distance.

Thus;

Height of each riser = 108.5/14

Height of each riser = 7.75 inches

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

b

step-by-step explanation:

the word superfluous means unnecessary