Question

what is the area of this figure? square millimeters

Explanation:

Step1: Divide the figure into rectangles

We can divide the given figure into two rectangles. One rectangle with length 9 mm and width 5 mm, and another with length (9 - 5)= 4 mm and width 3 mm.

Step2: Calculate the area of the first rectangle

The area formula for a rectangle is $A = l\times w$. For the first rectangle with $l = 9$ mm and $w = 5$ mm, $A_1=9\times5 = 45$ $mm^2$.

Step3: Calculate the area of the second rectangle

For the second rectangle with $l = 4$ mm and $w = 3$ mm, $A_2=4\times3=12$ $mm^2$.

Step4: Calculate the total area

The total area of the figure $A = A_1+A_2$. So $A=45 + 12=57$ $mm^2$.

Answer:

57 square millimeters