Question

Can you do the bottom please which it says lesson 11.9 - 11.10

Answer 1

1.19)

In general, the area of a rectangle is given by the formula

`\begin{gathered} A=lw \\ l\to\text{ length} \\ w\to\text{width} \end{gathered}`

In our case,

`\begin{gathered} A_A=4\cdot4=16 \\ A_B=3\cdot4=12 \\ A_C=6\cdot2=12 \end{gathered}`

The area of figure A is 16 square units, the area of B is 12 square units and the area of shape C is 12 square units.

As for the area of a rectangle, in general,

`P=2l+2w=2(l+w)`

Then, in the case of each rectangle,

`\begin{gathered} P_A=2(4+4)=2\cdot8=16 \\ P_B=2(3+4)=2\cdot7=14 \\ P_C=2(2+6)=2\cdot8=16 \end{gathered}`

11.10)

Therefore, figures A and C have the same perimeter, whereas rectangles B and C have the same area.