Answer: 98cm
Step-by-step explanation:
Formula for perimeter of a rectangle is 2( length + width).
From the question, perimeter = 354cm while the width = 79cm.
Therefore, 354cm = 2(length + 79cm)
Therefore, divide both sides by 2;
354cm/2 = length + 79cm
Which gives; 177cm = length + 79cm;
Therefore subtract 79 from both sides to get 177 - 79 = length
Which gives length = 98cm
