The length of a rectangle is 3cm greater than its width. the perimeter of the rectangle is 34cm. find its length.
2 answers:
Answer:
length: 10 cm and width: 7 cm
Step-by-step explanation:
Let the width be x
then the length will be x + 3
perimeter of rectangle: 2 ( length + width )
<u>using the formula </u>:
2 ( x + 3 + x ) = 34
2 ( 2x + 3 ) = 34
4x + 6 = 34
4x = 28
x = 7
The width is 7 cm
Length:
x + 3
7 + 3
10 cm
Answer:
10cm
Step-by-step explanation:
The formula for perimeter is:
Let the width of the rectangle be x then the length would be...
3+x
Now, let's plug these values into the equation and solve. (Note we are also given perimeter is 34 cm):
And since the length is x+3 then it is...
x+3=7+3=10cm
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