Answer:
Mr. White can walk 4 miles in 1 hour.
Step-by-step explanation:
45min/3miles
60min/?miles
1 mile in 15 minutes
Answer:
A = 613.928 m2
Step-by-step explanation:
Answer: 13.8 m
Step-by-step explanation:
Given
From point A, angle of elevation is 
From point B which is 18 m closer, it changes to 
Suppose the height of tree is h
From figure, we can write

Similarly

Deduce the value of h

Thus, the height of the tree is 13.8 m