## anonymous one year ago help!

1. anonymous

@Vocaloid

2. Vocaloid

3. anonymous

4. Vocaloid

can you try drawing it? this is a bit confusing to understand

5. anonymous

ok ill draw it :)

6. anonymous

|dw:1440101981696:dw|

7. anonymous

@Vocaloid sorry im not the best drawer :)

8. anonymous

9. Vocaloid

|dw:1440102638495:dw|

10. Vocaloid

and judging by the problem, I'm guessing that this part is shaded?|dw:1440102795581:dw|

11. anonymous

ok then how do we get the answer?

12. Vocaloid

well, let's just look at the shaded part for now |dw:1440103002747:dw|

13. Vocaloid

we can split this into two rectangles like so:

14. anonymous

ok

15. Vocaloid

|dw:1440103070299:dw|

16. Vocaloid

|dw:1440103085020:dw|

17. anonymous

ok

18. Vocaloid

the diagram tells us that rectangle A has length 8 and width 3, so the area of rectangle A = ?

19. anonymous

what do i have to do to find the area of A

20. Vocaloid

area of a rectangle = length*width = ?

21. anonymous

so 24

22. Vocaloid

right, now we find the area of rectangle B length = 2, width = 1, so area of rectangle B = ?

23. anonymous

2

24. Vocaloid

right, now add the two areas together: area of A + area of B = ?

25. anonymous

25

26. Vocaloid

try again...

27. anonymous

oh sorry 26

28. Vocaloid

right, so 26 is our shaded area

29. anonymous

30. anonymous

31. anonymous

because its a 2 not a 3 .. so 8*2 not 8*3

32. Vocaloid

|dw:1440103580816:dw|

33. Vocaloid

|dw:1440103611680:dw|

34. Vocaloid

unless my drawing is incorrect

35. anonymous

oh! so its 26

36. Vocaloid

right, let's keep moving...

37. anonymous

k

38. Vocaloid

now, let's go back to the whole picture|dw:1440103693588:dw|

39. anonymous

right

40. Vocaloid

we can see that the area of the big rectangle = shaded + unshaded we have shaded, and we want to find unshaded. let's start by finding the area of the big rectangle the rectangle has width 8 and length 16, so area = ?

41. anonymous

128

42. Vocaloid

right. area of big rectangle = 128 so unshaded = area of big rectangle - shaded = ?

43. anonymous

102

44. Vocaloid

yup, so we're done

45. anonymous

so the nonshaded area is 102 feet

46. Vocaloid

right

47. anonymous

ok thanks :)