A tennis ball is thrown vertically downward from a height of 54 ft with an initial velocity of 8
fps. What Is the impact velocity of it hits a 6 ft. tall person on the head?
In triangle ABC, AB = 30 m., BC = 36 m. and AC = 48 m. has an area
equal to 539.32 m2. How far is the point of intersection of the
perpendicular bisectors from A?
Solution:
B
30 r
36
r r
A
48 C
abc
A=
4r
(36)(48)(30)
539.32 =
4r
r = 24.03 m. from A
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