Question

The length of a rectangle is 13cm more than 2 times breadth. If the perimeter is 62cm find the length.​

Answer 1

Answer:

25 cm

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Step-by-step explanation:

length = 13cm + 2b

perimeter = 62cm

perimeter = 2(l+b)

62cm = 2(13cm + 2b + b) (replacing l with 13cm+2b and perimeter with 62)

62 = 2 ( 13 + 3b ) (simplifying)

62 = 26 + 6b

62 - 26 = 6b (transposing 26 to the other side)

36 = 6b

b = 36/6 = 6 (transposing 6 to the other side and solving)

now, length = 13cm + 2breadth

breadth = 6cm

thus,

length = 13cm + (6x2)

= 13 + 12 cm

= 25 cm