In the parallelogram ABCD, CD = 21cm, AD = 18cm, DE = 15cm. Find DF ?
Answers
Given : parallelogram ABCD
AB = 24 cm
AD = 18 cm
DF = 15 cm
To Find : DE
Solution:
parallelogram ABCD
opposites sides are Equal
=> BC = AD = 18 cm
case 1 :
Assume DF ⊥ BC , DE ⊥ AB
DF ⊥ BC
Area of Parallelogram = BC * DF
18 * 15
= 270
Area of Parallelogram = AB * DE
= 24 * DE
24 * DE = 270
=> DE = 11.25 cm
case 2 :
Assume DE ⊥ BC , DF ⊥ AB
if DE ⊥ BC
DF ⊥ AB
Then
24 x 15 = 18 * DE
=> DE = 20 cm
Given : parallelogram ABCD
AB = 24 cm
AD = 18 cm
DF = 15 cm
To Find : DE
Solution:
parallelogram ABCD
opposites sides are Equal
=> BC = AD = 18 cm
case 1 :
Assume DF ⊥ BC , DE ⊥ AB
DF ⊥ BC
Area of Parallelogram = BC * DF
18 * 15
= 270
Area of Parallelogram = AB * DE
= 24 * DE
24 * DE = 270
=> DE = 11.25 cm
case 2 :
Assume DE ⊥ BC , DF ⊥ AB
if DE ⊥ BC
DF ⊥ AB
Then
24 x 15 = 18 * DE
=> DE = 20 cm
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