the adjacent sides of a parallelogram are 15 cm and 10 cm if the distance between the longer side is 6 cm find the distance between the shorter sides
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Bonjour!!
In parallelogram ABCD, AD is between longer side and CM is between shorter side.
AB = CD = 10 cm
BC = AD = 15 cm
AD = 6 cm
CM =? cm
Area of parallelogram = Base × Height
Area = BC × AD
= 15 × 6
= 90 cm^2
Area = AB × CM
90 = 10 × CM
CM = 90/10
CM = 9 cm
Hence, the distance between the shorter side is 9 cm.
Thanks :)
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Answer:
Let the present age of Rehman =x
3 years ago Rehman’s age =(x–3) years
5 years later Rehman’s age =(x+5) years.
Now, according to the condition,
(x–3)
1
+
(x+5)
1
=
3
1
(x–3)(x+5)
(x+5+x–3)
=
3
1
(x
2
–3x+5x–15)
(2x+2)
=
3
1
x
2
+2x–15=6x+6
x
2
–4x–21=0
(x+3)(x–7)=0
Either,x+3=0 Or, x–7=0
Thus, x=7 or –3; but age cannot be negative.
Hence the present age of Rehman is 7 years.
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