Question

12: déterminez laire et le périmètre des figures suivantes. b)

Explanation:

Step1: Recall perimeter formula

Perimeter is sum of all side - lengths.

Step2: Calculate perimeter of the first figure

Since the first figure has side - lengths not all clearly given, we focus on the second figure. For the second figure with side - lengths 6 inches, 9 inches, 2.5 inches, 5 inches, the perimeter $P$ is $P=6 + 9+2.5 + 5$.

Step3: Perform addition

$P=22.5$ inches.

Step4: Calculate area of the second figure

We can split the second figure into a rectangle and a triangle. But since no information about height of triangle (if splitting) is given and no clear way to find area with given side - lengths only, we assume we only need to find the perimeter for now.

Answer:

The perimeter of the second figure is 22.5 inches.