Can someone help on really stuck

50 ! pls ! 12.  building codes regulate the steepness of stairs. homes must have steps that are at least 13 inches wide for each 8 inches that they rise.

a. discuss how to find the slope of the stairs.
b. describe how changing the width or height affects the steepness of the stairs.

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height

Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old