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Mathematics 8 Online
OpenStudy (horsegal244):

Below! 8)

OpenStudy (horsegal244):

OpenStudy (horsegal244):

@phi

OpenStudy (phi):

it helps if we divide the shaded area into rectangles and triangles.

OpenStudy (horsegal244):

ok but i only have 10 mins so can we do this quickly?

OpenStudy (horsegal244):

@phi !!

OpenStudy (horsegal244):

@poopsiedoodle

OpenStudy (phi):

you need to find the lengths of the red lines

OpenStudy (phi):

can you find the area of the bottom rectangle, using length*width? then the area of the middle rectangle then the area of the top triangle

OpenStudy (horsegal244):

10 in 8

OpenStudy (horsegal244):

16= bottom 10= mid idk=top

OpenStudy (phi):

the top triangle has "height" 8 ft (whole side) minus 2 +2+1

OpenStudy (horsegal244):

3?

OpenStudy (phi):

yes, and width 10

OpenStudy (horsegal244):

30

OpenStudy (phi):

it is a triangle 1/2 * base * ht

OpenStudy (horsegal244):

15

OpenStudy (phi):

now add them up. that is the area of the shaded region

OpenStudy (horsegal244):

41

OpenStudy (phi):

and for the non-shaded area find the area of the "big box" and subtract 41 from it.

OpenStudy (horsegal244):

its 87 i think..

OpenStudy (phi):

yes

OpenStudy (trwatkins1):

phi when your done here can you help me please

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