Question

The length of a rectangle is twice its breadth . If perimeter is 36 cm then its length is ________

Answer 1

Answer:

Length of the Rectangle = 12 CM

Step-by-step explanation:

Let the Length be L

Breadth = B

Its Given that

L = 2B

Perimeter of Rectangle = 2(L + B) = 36 CM

ie 36 = 2(L + B)

ie 36 = 2(2B + B)

ie 36 = 2(3B)

ie 36 = 6B

Therefore B = 36/6 = 6 CM

There fore Length = 2B = 2 X 6 = 12 CM

Answer 2

Answer:

12cm

Step-by-step explanation:

length of rectangle be l

and breadth be b

Perimeter of a rectangle = 2(l+b)

Perimeter=36cm

36=2(l+b)

l+b = 18 --------(1)

it is given that l=2b

so,

putting l=2b in (1)

2b+b= 18

3b=18

b=6cm

l=12cm

Length = 12cm

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