Question

what is the area of this figure? 3 km 3 km 6 km 10 km 7 km 9 km

Explanation:

Step1: Divide the figure into two rectangles

We can divide the given figure into a rectangle with sides 9 km and 7 km and another rectangle with sides 3 km and 3 km.

Step2: Calculate the area of the first rectangle

The area formula for a rectangle is $A = l\times w$. For the rectangle with length $l = 9$ km and width $w = 7$ km, the area $A_1=9\times7 = 63$ km².

Step3: Calculate the area of the second rectangle

For the rectangle with length $l = 3$ km and width $w = 3$ km, the area $A_2 = 3\times3=9$ km².

Step4: Calculate the total area of the figure

The total area $A = A_1+A_2$. So $A=63 + 9=72$ km².

Answer:

72 km²