Question

d) The sides of a rectangle
are in the ratio 5 : 4.
If its perimeter is 144 cm, then its length
is​

Answer 1

Answer:

Step-by-step explanation:

since ratio of length and breadth is 5:4

now let 5x is length and 4x is breadth

according to the question,

perimeter=72=2(5x+4x)=2(9x)=18x

18x = 72

x = 72/18 = 4

then length= 5x = 5*4= 20 cm

breadth = 4 x = 4*4 = 16 cm

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Answer 2

Answer:

formula=5x+7x=12x=144cm

Step-by-step explanation:

x=12÷144

×=12

breadth=60cm

length=84cm