help me please Qno.20
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area of parallelogram = base x height
so DE × AB = BC × DF
(opposite sides of parallelogram are equal)
6.8 × 18 = 15 ×DF
DF = 6.8 × 18 / 15
DF = 122.4/15
DF= 8.16 cm
so DE × AB = BC × DF
(opposite sides of parallelogram are equal)
6.8 × 18 = 15 ×DF
DF = 6.8 × 18 / 15
DF = 122.4/15
DF= 8.16 cm
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Answer:
Step-by-step explanation:
DC = 18cm
AB = DC = 18cm (opposite sides of a parallelogram are equal)
DE = 6.8cm
area of parallelogram = Base × height
= AB × DC
= 18 × 6.8
=122.4cm²
but, area of parallelogram is also = BC × DF
= 15 × DF
now, 15×DF = 122.4
DF = 122.4/15
DF = 8.16cm
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