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Mathematics 21 Online
OpenStudy (anonymous):

Find the area of the irregular figure. Use 3.14 for pi. Show your work. Round to nearest tenth. @Directrix

OpenStudy (anonymous):

OpenStudy (alexandervonhumboldt2):

area of semicircle=1/2*3.14*1.8*1.8

OpenStudy (alexandervonhumboldt2):

area of semicircle=1/2*pi*r^2

OpenStudy (alexandervonhumboldt2):

area of triangl=1/2base*height

OpenStudy (anonymous):

1/2 also means 0.5 correct?

OpenStudy (anonymous):

once I get those do I add them together? Could I double check with you when I'm done?

OpenStudy (alexandervonhumboldt2):

yes

OpenStudy (alexandervonhumboldt2):

yes of cousrse

OpenStudy (anonymous):

is the triangle 8.64 and the semi circle 5.0868?

OpenStudy (anonymous):

13.7268? If I round to tenth it'd be 13.7?

OpenStudy (alexandervonhumboldt2):

yes now add them

OpenStudy (alexandervonhumboldt2):

yes correct 13.7

OpenStudy (anonymous):

Wow! Quick question @AlexandervonHumboldt2 how did you get 1.8 as a radius?

OpenStudy (alexandervonhumboldt2):

3.6/2=1.8 radius = 1/2diameter

OpenStudy (anonymous):

Thank you so much this is really helpful :)

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