SOLUTION: The formular for the surface area is given by s={6r^2}+6rh a.make h the subject of the relation b.find h if r=2 ana 5=100

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Question 1194908: The formular for the surface area is given by s={6r^2}+6rh a.make h the subject of the relation b.find h if r=2 ana 5=100
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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The formula for the surface area is given by s={6r^2}+6rh
:
a. make h the subject of the relation
6r^2 + 6rh = s
Factor out 6r
6r(r+h) = s
r + h = s%2F%286r%29
h = s%2F%286r%29 - r
:
b. find h if r=2 and s=100
h = 100%2F%286%2A2%29 -2
h = 100%2F12 - 2
h = 81%2F3 - 2
h = 61%2F3
:
:
See if this checks out in the original formula; r=2 and h=6.3333
s = 6(2^2) + (6*2*6.3333)
s = 24 + 75.9996
s = 99.9996 ~ 100