Question

Find the lenghth of AB sides of ABCD parallelogram AD = (3/5)AB . Perimeter of ABCD is 11.2 cm .

Accepted Answer

We know that the perimeter of this figure must be equal to the sum of 2 times each side.  So
2AD + 2 AB = 11.2
We know that AD is 3/5 of AB and 3/5 = .6.  So
AD = .6 AB
Now we substitute -- we put in .6 AB in the place of AD.
2 (.6 AB) + 2 AB = 11.2
1.2 AB + 2 AB = 11.2
3.2 AB = 11.2
AB = 3.5
So the length of the side AB is 3.5.
If AB = 3.5 and AD = .6(3.5) then
AD = 2.1

Answer

We know opposite sides of a llgm are equal,
therefore,
AB = CD
AD = BC
AB+CD+AD+BC = 11.2
AB+AB+(3AB/5)+(3AB/5)=11.2
16AB/5 = 11.2
16AB = 11.2*5 = 56
AB = 56/16 = 3.5cm

Answer

In a parallelogram, opposite sides are equal. So Therefore
The perimeter = 2 (AD+AB) = 2{(3/5)AB +AB} = 16/5 AB which is given to be 11.2cm .Or
(16/5) AB = 11.2 cm. Or
AB = (11.2)5/16 = 56/16 = 3.5 cm.
AD = (3/5)AB = (3/5)(3.5) = 2.1 cm

Answer

If ABCD is a parallelogram, it's opposite sides are equal and  parallel.
AB=CD and AD=BC
AD=(3/5)AB
calclualte the perimeter of the parallelogram:
P=2AB+2AD=2(AB+AD)=2[AB+(3/5)AB]
We'll substitute in the formula of perimeter :
11.2 = 2[AB+(3/5)AB]
5.6 = AB+(3/5)AB
We notice that we'll have to have the same denominator, both sides of  equality, the denominator being 5.
5*5.6 = 5*AB + 3*AB
28 = 8AB
AB=7/2cm
AB=3.5cm
AD= (3/5)AB
AD= (3/5)*3.5
AD=2.1cm

Answer

ABCD is a parallelogram therefore  it's opposite sides are equal and parallel.
AB=CD and AD=BC
It is stated that,
AD=(3/5)AB
So the perimeter of the parallelogram = the sum of all the four sides:
P=2AB+2AD=2(AB+AD)=2[AB+(3/5)AB]
By substituting the values we get,
11.2 = 2[AB+(3/5)AB]
5.6 = AB+(3/5)AB
By multiplying the denominator on both sides of the equation we get,
5 x 5.6 = 5 x AB + 3 x AB
28 = 8AB
AB=7/2cm
AB=3.5cm
AD= (3/5)AB
AD= (3/5)*3.5
AD=2.1cm

Answer

The perimeter of the parallelogram ABCD is:
AB+BC+CD+AD = 11.2
But we know that AB=CD and BC=AD
==> 2AB +2AD = 11.2
We also have AD=(3/5) AB
==>  2AB+ 2(3/5)AB=11.2
==> (16/5) AB = 11.2
==> AB = (11.2) (5/16) = 3.5
Then AD = (3/5) *3.5 = 2.1

Answer

If ABCD is a parallelogram, it's opposite sides are equal and parallel.
AB=CD and AD=BC
From the enunciation we'll have:
AD=(3/5)AB
We'll calclualte the perimeter of the parallelogram:
P=2AB+2AD=2(AB+AD)=2[AB+(3/5)AB]
We'll substitute in the formula of perimeter all we know:
11.2 = 2[AB+(3/5)AB]
5.6 = AB+(3/5)AB
We notice that we'll have to have the same denominator, both sides of equality, the denominator being 5.
5*5.6 = 5*AB + 3*AB
28 = 8AB
AB=7/2cm
AB=3.5cm
AD= (3/5)AB
AD= (3/5)*3.5
AD=2.1cm

Math

Find the lenghth of AB sides of ABCD parallelogram AD = (3/5)AB . Perimeter of ABCD is 11.2 cm .

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