Question

if the side of the rectangle are in the ratio 3:5, what is the length of its side if the perimeter is 64 cm ?​

Answer 1

$\red{\textbf{\textsf{Answer:}}}$

Side of rectangle = 3:5

Perimeter of rectangle = 64

we know that,

perimeter of rectangle = 2(l+b)

so,

64=2(l+b)

•°•l+b=64/2=32

So, l+b=32

Now,

l:b=3:5

l+b=3+5=8

but from above :-

8 unit =32

1 unit = 32/8 = 4

so, 3 unit = 3x4=12

5 unit = 5x4=20

hence, length = 12cm breadth =20cm

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Answer 2

Answer:

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