By the description in the problem of the tent, there are 3 rectangle faces are faces, one is the floor and the other two are formin the ceiling. This means the height of the tent can be calculated from the information of the triangular faces.
Each side of the triangle is 196 cm, if we divide the equilateral triangle into two rights triangles with a base of 196/2=98cm and a hypotenuse of 196 cm, the side missing is the height of the original equilateral triangle and also the height os the tent. Using the Pitagora's theorem:
This is for the first graph because if you look at the bottom half of a circle is 180 so since one is 121 you just have to subtract 121 from 180 and you have your answer
