Question

The ratio of two adjacent sides of a parallelogram is 4:5. if its perimeter is 72 cm, find its adjecent sides option a) 16 and 25 b)16 and 20 c)18 and 25 d)18 and 20​

Answer 1

Answer:

b) 16 and 20

Step-by-step explanation:

Let x be any positive integer...

Given that, adjacent sides are in the ratio 4:5.. So the sides are 4x and 5x...

The perimeter of parallelogram is given by,

$2 \: (sum \: of \: adjacent \: sides)$

Hence substituting the values, we get,

$2(4x + 5x) = 72\\ \\ = > 2(9x) = 72 \\ \\ = > 18x = 72 \\ \\ = > x = \frac{72}{18} \\ \\ = > x = 4$

$4x = 4(4) = 16 \: cm \\ 5x = 5(4) = 20 \: cm$

Therefore the right option is b) 16 and 20

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Answer 2

Answer:

muje pata hai par nahi bataugi