## anonymous one year ago What is the area of an object with with 5cm, 7cm, 5cm, 12cm, 14cm, 12cm?

1. jim_thompson5910

Can you draw the figure?

2. anonymous

|dw:1434496859928:dw| @jim_thompson5910

3. jim_thompson5910

thanks

4. anonymous

You are welcome

5. jim_thompson5910

there are a few ways to do it, but you can break the figure up like this |dw:1434497162507:dw|

6. jim_thompson5910

|dw:1434497192921:dw|

7. mathstudent55

There is info missing & info that is hard to understand.

8. mathstudent55

|dw:1434497071072:dw|

9. mathstudent55

|dw:1434497122546:dw|

10. jim_thompson5910

maybe that 7cm is the height shaded here? |dw:1434497310578:dw|

11. jim_thompson5910

yeah maybe?

12. anonymous

So the area should be 218

13. mathstudent55

@Ashleyistheboss2 Are the 7-cm sides on top as shown below? |dw:1434497290540:dw|

14. anonymous

no

15. mathstudent55

Then where is the 7-cm side? Like this? |dw:1434497500097:dw|

16. anonymous

yea

17. mathstudent55

Ok. One more question. What are the lengths of these two sides (in thick black lines)? |dw:1434497577599:dw|

18. anonymous

7cm

19. mathstudent55

|dw:1434497821659:dw|

20. mathstudent55

Then Jim was correct all along.

21. jim_thompson5910

so the picture actually looks like this |dw:1434497940789:dw|

22. jim_thompson5910

|dw:1434498035648:dw|

23. jim_thompson5910

|dw:1434498068378:dw|

24. jim_thompson5910

break the figure into 3 rectangles A,B,C |dw:1434498077327:dw|

25. jim_thompson5910

Rectangle A is a 12 by 5 rectangle Rectangle B is a 4 by 5 rectangle (see below) Rectangle C is a 5 by 12 rectangle |dw:1434498154050:dw|

26. mathstudent55

Another way of doing it is: |dw:1434502570594:dw|

27. mathstudent55

|dw:1434502643109:dw|