A parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long then its area is: Options: A . &nbsp480 sq.m B . &nbsp320 sq.m C . &nbsp600√15 sq.m D . &nbsp450√15

A parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long t

Question

A parallelogram has sides 60 m and 40 m and one of its diagonals is 80 m long then its area is:

Options:

A . 480 sq.m

B . 320 sq.m

C . 600√15 sq.m

D . 450√15

Answer: Option C

AB = 60 cm , BC = 40 cm and AC = 80 m
S = 1/2 (60+40+80) m =90 m
(s - a) = 30 m , (s -b) = 50 m and (s - c) = 10 m
Area of ˆ† ABC
.

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