Math, asked by sartaazclas, 1 year ago

help me please Qno.20

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Answered by ankitagni
1
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
Answered by sailokesh0904
0

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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