To find the missing side length of the rectangle, we can use the formula for the area of a rectangle:
A=l×w
where A is the area, l is the length, and w is the width.
We are given the area and the width, so we can plug them into the formula and solve for the length:
11.3=l×5.4
l=5.411.3
l≈2.1
So, the missing side length is approximately 2.1 cm.
To find the perimeter of the rectangle, we can use the formula:
P=2(l+w)
where P is the perimeter, l is the length, and w is the width.
We have both the length and the width, so we can plug them into the formula and simplify:
P=2(2.1+5.4)
P=2(7.5)
P=15
So, the perimeter of the rectangle is 15 cm.
I hope this helps.