Answer: 8 cm
Explanation:
Write out the equation described in the first sentence.
"Length is 19 less than..." means L = ... - 19
"Three times the width" means 3W
So, L = 3W - 19
Plug in value of W
L = 3(9) - 19 = 8 cm
Given,
width = 9cm
so a/q length of the rectangle will be 19 - ( 9×3) = 19 - 27 = 8 cm
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