if perimeter of rectangle is 170 cm and breadth is 5 cm less than twice the length find its length
Answers
Answered by
3
Answer:
let length be x cm
so. breadth be 2x - 5
perimeter = 2 ( l + b)
2 (x + 2x-5) = 170
6x - 10 = 170
x = 170 +10 / 6
= 180/6
= 30
length = x= 30cm
breadth = 2x - 5 = 2 × 30 -5 = 55cm
here we see that breadth is large than length
Answered by
2
Answer:
Perimeter = 170cm
Let length be = x
Let breadth be = 2x-5
Therefore, 170 = 2(l+b)
Therefore, 170 = 2((2x-5)+x)
Therefore, 170 = 2(2x-5+x)
Therefore, 170 = 2(3x-5)
Therefore, 170 = 6x-10
Therefore, 170+10 = 6x
Therefore, 180/6 = x
Therefore, 30 = x
Or,x = 30cm
So, Length= x =30cm
Breadth = 2x-5 = 2*30-5 = 60-5 = 55cm
Here is your answer
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