ibeknaz1 ibeknaz1

26-03-2018
Mathematics

contestada

The perimeter of parallelogram ABCD is equal to 10 cm. Find the length of diagonal BD if you know that the perimeter of △ABD is 8 cm.

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mkryukova19 mkryukova19

26-03-2018

2a+2b=10, a+b=5
a+b+d(diagonal)=8, 5+d=8, d=3(diagonal BD=3)

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