Question

The length of a rectangle is 6cm more then three times its breadth . The perimeter is 132cm. Its length is

Answer 1

Answer:

15 centimetre

Step-by-step explanation:

P= 2(L +B)

2(6+3X + X)=132

2(6 +4X)=132

6+ 4X=66

4X=60

X=15

Therefore length=15

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Answer 2

Answer:

Length of rectangle be x and breadth be y

Perimeter = 2(x+y) = 132

given that x = 3y+6

perimeter,

132 = 2(3y+6+y)

132/2= 4y+6

66=4y+6

4y= 66-6

4y=60

y=15cm  

x=3×15+6= 51cm

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