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Mathematics 15 Online
OpenStudy (anonymous):

plz explain and answer plzz save my life.....

OpenStudy (anonymous):

We dont have anything to answer

OpenStudy (anonymous):

OpenStudy (anonymous):

im begging i really need help

OpenStudy (anonymous):

do you know how to calculate area of triangle

OpenStudy (anonymous):

and square

OpenStudy (anonymous):

yeah i get it when i get two numbers to work with but this is so confusing ;(

OpenStudy (anonymous):

okay try not to complicate things. Break it into smaller pieces

OpenStudy (anonymous):

this pic is made up of 2 of the same triangle and a square

OpenStudy (anonymous):

do you see it?

OpenStudy (anonymous):

is it 4 ft and 2ft?

OpenStudy (anonymous):

yes use that to calculate area of triangle BDC

OpenStudy (anonymous):

8?

OpenStudy (anonymous):

nope

OpenStudy (anonymous):

remember area of triangle= \[\frac{ 1 }{ 2 } \times base \times height\]

OpenStudy (anonymous):

your base is 2 and height is 4 so area for 1 triangle is 4

OpenStudy (anonymous):

if you are saying 8 because there is 2 triangle then yes the area is 8

OpenStudy (anonymous):

so is 2*4=8 1/2= 4 right?

OpenStudy (anonymous):

yes that is 1 triangle, but do you see you have another triangle which is exactly the same

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

so multiply your 4 by 2

OpenStudy (anonymous):

which is ?

OpenStudy (anonymous):

8

OpenStudy (anonymous):

okay know move to the area of square which is?

OpenStudy (anonymous):

\[base \times height\]

OpenStudy (anonymous):

damm i dont know crap ;(

OpenStudy (anonymous):

basically your base is 4 and height is 4

OpenStudy (anonymous):

16

OpenStudy (anonymous):

area of square = 16 area of both triangle = 8 add up both area = area of the whole thing = 16+8 = 24

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