a rectangle has length which is 5 cm less than twice its breadth. if the length is decreased by 5 cm and breadth is increased by 2 cm, the perimeter of the resulting rectangle will be 74cm . find the length and breadth of the original rectangle.
Answers
Answered by
0
Answer:
37CM
Step-by-step explanation:
L=5CM
B=(5-2)=3
PERIMETER OF THE RECTANGLE 2(L+B)
=74=2(L+B)÷2
=74=2(5-3)÷2
=74=2(3)÷2
=74÷3
=37CM
Answered by
2
Answer:
- let the length of the rectangle be x cm
- let the breadth of the rectangle be y cm
- X=2y-5(equation 1)
- x'=x-5
- y'=y+2
- perimeter= 2(l+b)
- 2(x-5+y+2)=74
- x+y-3=37
- x+y=40
- 2y-5+y=40
- 3y=45
- y=15
- x=2(15)-5
- x=30-5=25
- Therefore, length=25cm and breadth=15cm
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