## mckenzieandjesus one year ago Find the area of the shaded region.

1. mckenzieandjesus

16 square units 17 square units 32 square units 36 square units

2. mckenzieandjesus

3. mckenzieandjesus

@jim_thompson5910 could u help? i think its 17 but idk

4. mckenzieandjesus

@math1234

5. mckenzieandjesus

6. mckenzieandjesus

@horsegirl27

7. horsegirl27

I'm sorry, idk :/

8. mckenzieandjesus

ah ok thats ok thanks for looking at it tho

9. horsegirl27

yw :) I wish I could help though >.<

10. anonymous

What's the area of just the small white triangle?

11. mckenzieandjesus

90 degrees

12. mckenzieandjesus

thats ok @horsegirl27

13. anonymous

The white triangle has base = 5 and height = 8. Use the equation to find the area |dw:1435276292321:dw|

14. mckenzieandjesus

so would i times or how would i do that ?

15. mckenzieandjesus

is bh 8*5?

16. anonymous

yes

17. mckenzieandjesus

how do i put the 1/2 in?

18. mckenzieandjesus

8*5=40

19. anonymous

you multiply by 1/2. $A = \frac{ 1 }{ 2 }*8*5$

20. mckenzieandjesus

theres no 20 on my answers

21. anonymous

oh, yeah you're looking for the blue area. So the base would be 4 A = ½(8)(4)

22. mckenzieandjesus

ok thats what i was thinking but u said 5 so got confused lol. thanku.

23. anonymous

24. mckenzieandjesus

so 16 square units. thank u for ur help!

25. anonymous

yes 16

26. mckenzieandjesus

no its all good!

27. mckenzieandjesus

do you know what a circles area or perimeter is?

28. mckenzieandjesus

What is the measure of DEF in circle H?

29. anonymous

r = radius Area: A = πr² Circumference is another word for perimeter of a circle. C = 2πr

30. mckenzieandjesus

ok so do you know how id calculate that image above?

31. anonymous

EG is a diameter, which makes arc EFG a semicircle. Semicircles are 180°. Subtract 130 to get the answer

32. mckenzieandjesus

I just figured it out 360-(130+90)=140

33. mckenzieandjesus

oh so im wrong?

34. anonymous

yes

35. anonymous

it's just 180-130

36. mckenzieandjesus

oh ok thanku!

37. anonymous

you're welcome