SOLUTION: PPS 48: A parallelogram of area 78 square units has one side of length 12. Find the length of an altitude to that side.

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Question 79717: PPS
48: A parallelogram of area 78 square units has one side of length 12. Find the length of an altitude to that side.
Answer by nilan(17) About Me  (Show Source):
You can put this solution on YOUR website!
the area of parallelogram is given by 1%2F2%2Al%2Ah
where l is the length of one side and h is the length of altitude to that side
Let h as length of an altitude to that side
then 1%2F2%2A12%2Ah=78
h=78%2A2%2F12
h=13