Answer:
1549.5
Step-by-step explanation:
Hello There!
Heron's area formula is

all we have to do is plug in the values
so

so the area of the triangle is 1549.498509
our final step is to round to the nearest hundredth
the answer would be 1549.5
Answer:
the second one
Step-by-step explanation:
Answer:55.227
Step-by-step explanation:
Given data
mass
=13lb
spring stretches by
=4.5in=0.375 ft
g=
Now Spring constant K
mg=kx
k=
For critical damping 

and 

substituting values

c=55.227 lb.sec/ft
Answer:
250
Step-by-step explanation:
because if he's directly under it that means it's a straight line
I think you can use cosine rule if only the lines that form the <52 are equal.