Hey, i forgot how to solve this problem. can you solve it for me?

a/3 + 11 = -5

What two criteria are needed for triangles to be similar

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

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?