The decomposition of the parallelogram into triangle then into a rectangle is shown below
The measurement we need to calculate the area is the length and the width of the rectangle; 15 feet and 10 feet
Area = 15 × 10 = 150 feet²
5x- 3/2x= -4 -7/2
10/2 x - 3/2x= -8/2 -7/2
7/2x= -15/2
7x= -15
x= -15/7
Answer:
A
Step-by-step explanation:
Answer:
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Hes using trigonomtery of a right angled triangle.
tan 72 = x / 12.25 where x = height of the wall
x = 12.25 * tan 72 = 37.7 feet