Answer:
96 m²
Step-by-step explanation:
The area of a parallelogram is the height of the parallelogram multiplied by it's length. So, in this context:

Substitute 1 for d. d+18=1+18=19
Answer:
The mean score is 87
Step-by-step explanation:
79x2=158
158-71=87
Answer:
19.47
Step-by-step explanation:
Use the law of sines.
sin(90)/6 = sin(x)/2
Multiply both sides by 2
2 * sin(90)/6 = sin(x)
Use a calculator
0.33333 = sin(x)
sin^-1 0.3333 = 19.47