Area of square base = 324 m²
Length of the square side = √324 = 18
The side of the square is the base of the triangle.
Area of triangle = (1/2)*base* height
135 = (1/2)*18* h
135 = 9h
135/9 = h
15 = h
height = 15 m
To get the height of the Pyramid, the height of the Triangle and half the length of the side of the square form a right angled triangle.
Hypotenus = 15
Half length of square = 18/2 = 9
Height of Pyramid = H
By Pythagoras' Theorem:
15² = H² + 9²
225 =H² + 81
 H² + 81 = 225
H²  = 225 - 81
H²  = 144          Take square root of both sides
H  = √144
H = 12
Height = 12 meters. 
Option C.
        
             
        
        
        
The answer is that they will meet at 7.20 pm ! hope this helped
        
             
        
        
        
two weeks = 47     47/2 = 23.5 every week
24 weeks = 430    430/24= about 17.9 every week
She save from about $17.9 to $23.5
(not sure I did it right. Hope I helped :))
 
        
                    
             
        
        
        
Step-by-step explanation:
The 2 lines are parallel to each other which means that angle #5 and 93° are alternate interior angles so by definition, they are equal. Hence angle 5 = 93°