6. In parallelogram ABCD, AB = 20 cm. Altitudes
AY and DX are corresponding to bases BC and
AB respectively. If DX = 12 cm and AY = 15 cm,
then find BC and perimeter of ABCD.
Answers
Answered by
12
Step-by-step explanation:
We know that area of parallelogram = base × height
so, area of 1st = area of 2nd
AB × AY = BC × DX
20 × 15 = BC × 12
BC =( 20 × 15 )/12
BC = 25 cm
Perimeter of parallelogram = 2 ( AB + BC)
= 2(20+25)
= 2 × 45 = 90 cm
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