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Answer:
Length of a rectangle is 45 cm
Width of a rectangle is 9 cm
Explanation:
Given:
The length of a rectangle is five times its width. If the perimeter of the rectangle is 108 cm, find its length and width.
Solve:
Let the width of a rectangle be "x".
Which "x" is a variable (what we don't know)
Thus, the length of a rectangle is 5 × x.
P = Perimeter
Hence,
P = 2 × (x+5x)
P = 108
( x + 5x ) = 6x
108 =2 × 6x { 2 × 6x = 12 x)
108=12x
Divide both parts of the equation by 12:
108/12 = 12x/12
x = 9 cm
5 × 9 cm = 5 × x {Length of a rectangle is 5 times its width}
45 cm=5x
Therefore;
Length of a rectangle is 45 cm
Width of a rectangle is 9 cm
xcookiex12
8/18/2022