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Sagot :
Answer:
Length = 45
width = 33
Step-by-step explanation:
Formula for perimeter of a rectangle = 2l +2w
where L= length ,w= width /breadth
Now;
with the question the length and width is unknown but the width is 12cm less than the length so;
width =( L -12cm )
Also the length is not given so remains L
Using the formula
2l + 2w
= 2l + 2( l- 12cm )
This must be equated to the perimeter
So;
2l + 2(l- 12cm ) = 156
2l + 2l -24cm = 156
4l = 156 +24
4l = 180
l = 45cm
therefore the length is 45cm
The width can be gotten by using the guideline provided which is, (L -12cm)
placing L which is already known
= (45-12)
= 33cm
therefore the width is 33cm
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