Find the combined area of the triangles. Click on the answer until the correct answer is showing.

- anonymous

Find the combined area of the triangles. Click on the answer until the correct answer is showing.

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- anonymous

|dw:1438287563603:dw|

- anonymous

plz help

- welshfella

what is the length of each leg of the triangles equal to ? - its some property of the circle.

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## More answers

- anonymous

4

- welshfella

????
there are no values given in the question

- anonymous

the diameter would be 8

- anonymous

the triangles are right triangles

- welshfella

can you please submit the whole question

- welshfella

yes they are right angles and the length of each leg = radius of the circle

- jim_thompson5910

Each triangle looks like this
|dw:1438288256480:dw|

- anonymous

the options are:
A=27pi
A=4pi-8
A=6/3pi
A=16
A=9pi-9/2 âˆš3

- jim_thompson5910

Area of triangle
A = (b*h)/2
b = base
h = height

- anonymous

so 4x4 = 16?

- jim_thompson5910

cut that in half to get 8

- jim_thompson5910

each triangle has an area of 8

- anonymous

But wouldn't that still be 16 because I'm finding the area of the COMBINED triangle?

- jim_thompson5910

yes you add up 8 and 8 to get 16

- jim_thompson5910

you can think of it as combining the two triangles to form a rectangle
|dw:1438288668943:dw|

- anonymous

So the answer is 16?

- anonymous

I have another question...

- anonymous

Find the area of the shaded sections. Click on the answer until the correct answer is showing.

- jim_thompson5910

yeah the answer is 16

- anonymous

|dw:1438288773246:dw|

- anonymous

I don't think I'll ever understand this...

- jim_thompson5910

|dw:1438289099785:dw|
120+x = 180
what is x ?

- anonymous

x = 60?

- jim_thompson5910

yes

- jim_thompson5910

what is the area of the entire circle?

- anonymous

360

- jim_thompson5910

use the formula
A = pi*r^2

- jim_thompson5910

in this case, r = 4

- anonymous

A= 3.14 x 16 = 54.4?

- jim_thompson5910

let's leave that in terms of pi

- jim_thompson5910

area of entire circle = 16pi

- jim_thompson5910

the angle 60 is 60/360 = 1/6 of the circle
so the area of the pizza slice I shaded is 1/6 of the entire area
|dw:1438290027136:dw|

- jim_thompson5910

area of 1 pizza slice = (1/6)*(entire area)
area of 1 pizza slice = (1/6)*(16pi)
area of 1 pizza slice = (8/3)*pi

- jim_thompson5910

make sense?

- anonymous

not really...but you can move on to the next part...

- jim_thompson5910

well 1 slice is (8/3)*pi, so 2 slices combine to 2*(8/3)*pi = (16/3)pi

- anonymous

okay

- jim_thompson5910

|dw:1438290120997:dw|

- anonymous

OH! I get it! THANKKK YOUU!!!

- jim_thompson5910

np

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