perpendicular distance between two parallel sides of a parallelogram is 8 cm the perpendicular distance between the other two sides is 7 cm if the side that are 7 cm apart are 10 cm long each,the length of the other side is
a:11.42
b:10
c;8.75
d:7.5
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Answer: Let ABCD be the //gm.
given,
AE =7cm and BF= 8cm
We know that Area of a //gm = Altitude Or height × the side on which the height is.
Therefore,
Area of //gm ABCD = AE × BC
=7×10
=70 (1)
Again Area if //gm ABCD taking BF as height = BF× CD
=8× CD (2)
from 1 and 2 we get,
70=8×CD
CD=70÷8
CD =8.7 cm
ANSWER is (C)
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