Question

The perimeter of a rectangle is 36 cm and the length is twice the width. What are the

dimensions of this rectangle ?

(A) 17 cm (B) 6 cm (C) 4 cm (D) 15 cm

Answer: ​

Answer 1

Perimeter = 2(l+b)

where perimeter =36cm and l= 2b ,so

36 = 2(2b+b)

3b= 18cm

so

b =18/3=6 cm

and

l = 6×2 =12

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