if two adjacent angles of a parallelogram are 11 cm and 15cm and one of its diagonal is 16 cm find the area of the parallelogram
(heron's formula. class9)
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Answer:
S=11+15+16/2
=21CM
=ROOT 21(21-15)(21-11)(21-16)
=ROOT21*6*10*5
=6 ROOT 35
AREA = 2*6 root 35
= 12 root 35
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