Question

Show two different ways you could break the figure into rectangles to find its area. Find the area using each method, and show that both methods give the same answer.

Answer 1

well you can make a vertical line to separate the two rectangles or a horizontal one.
if i do a horizontal one, it will leave me with one rectangle of length 20 and width 12, while another with length and width of 3.
So using the formula A=LW
A = 20(12)
A = 240
A= 3 * 3
A = 9
A = 240 + 9
A = 249
On the second one if i do a vertical line down, i will be left with one rectangle of a length of 3 and width of 15, while another with a length of 17 and a width of 12. Using the same steps,
A = 3(15)
A = 45
A= 17(12)
A = 204
A = 204 + 45
A = 249
So yes, it doesn't matter what way you break it, using either method gives you the same answer.

Answer 2

One side in the figure below is not labeled. What is its length? Explain how you know.

Answer 3

its 3cm because side 15cm and side 12cm are parallel so if you subtract 15cm - 12cm = 3cm

Answer 4

Perimeter means to add right

Answer 5

yes

Answer 6

okay(:

Answer 7

perimeter add all the sides

Answer 8

its 70

Answer 9

no im doing another probulm

Answer 10

oh ok .