Answer:
Step-by-step explanation:
use pythagoras
diagonal = 
=
feet or 17.03 feet
Step-by-step explanation:
x² = 50²+ 55² - 2 • 50 • 55 • cos61°
Area of a triangle= 1/2 (b)(h).
Area= 1/2 (11)(7)
Area= 77/2
Area= 38.5
Answer:

Step-by-step explanation:
The Exponential Product rule tells us that...

Therefore,
.
Therefore, 
Their average speed was 52 miles per hour