Question

In a Parallelogram , length of one Diagonal in 35 cm, then the length of 2nd diagonal is option a 70 CM, option b 35cm ,option c 25 CM, d 45 CM



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Answer 1

Answer:

Step-by-step explanation:

Correct answer:

142−−−√cm  

Explanation:

The formula for the relationship between diagonals and sides of a parallologram is

(d1)2+(d2)2=2a2+2b2,

where d1 represents one diagonal,  

d2 represents the other diagonal,  

a represents a side, and  

b represents the adjoining side.  

So, in this problem, substitute the known values and solve for the missing diagonal.  

142+(d2)2=2(12)2+2(5)2→196+d2=288+50

→d2=142→d=142−−−√

So, the missing diagonal is 142−−−√ cm