Final answer:
The perimeter of a rectangle is found by adding the lengths of its sides and multiplying by 2.
Step-by-step explanation:
The perimeter of a rectangle is the sum of all its side lengths. To find the perimeter, add the lengths of the two sides and multiply by 2.
Let's say the length of the rectangle is 4 cm and the width is 3 cm. The formula for finding the perimeter would be: P = 2(length + width). Substituting the values, P = 2(4 cm + 3 cm) = 2(7 cm) = 14 cm.
So, in this case, the perimeter of rectangle ABCD is 14 cm rounded to the nearest tenth.