Ask your own question, for FREE!
Geometry 10 Online
OpenStudy (anonymous):

Geometry Help Please??

OpenStudy (anonymous):

OpenStudy (anonymous):

that is pretty easy.

OpenStudy (anonymous):

really, can you help me with it?

OpenStudy (anonymous):

Well lets do area first. the prism is composed of 2 rectangles and 2 congruent triangles. We just add them together A of triangle is 1/2 B*h which is 1/2*14*24 A OF the front rectangle is W*L = 25*50 A of the back rectangle is W*L=14*50 now we add them 2(1/2*14*24 ) + (25*50) + (14*20) = surface area

OpenStudy (anonymous):

where'd you get 20 from?

OpenStudy (anonymous):

so would my SA = 1950?

OpenStudy (anonymous):

sorry should have been a 50 TYPO

OpenStudy (anonymous):

ok, so it should be 2300?

OpenStudy (anonymous):

i got 2286

OpenStudy (anonymous):

how?

OpenStudy (anonymous):

2(1/2*14*24 ) + (25*50) + (14*50) I copied pasted that to google.

OpenStudy (anonymous):

ok, i got the same answer. what about the volume? @timo86m

OpenStudy (anonymous):

is the volume 625?

OpenStudy (anonymous):

Volume is actually Base * height If you imagine it standing on the triangle then the triangle is the base and the Length is the height. so 1/2*14*24 * 50

OpenStudy (anonymous):

so its 8400?

OpenStudy (anonymous):

Yes hope i got it all right :)

OpenStudy (mathmath333):

|dw:1410723295057:dw|

OpenStudy (anonymous):

the height is 24

OpenStudy (mathmath333):

wait

OpenStudy (mathmath333):

\(\Large\rm here~~u~~have~~to~~find~~surface~~area~~of~~prism~~which~~consists~~\) \(\Large\rm of~~two~~triangles~~and~~three~~rectangles\)

OpenStudy (mathmath333):

two triangles are identical here

OpenStudy (mathmath333):

|dw:1410723710068:dw|

OpenStudy (mathmath333):

and two rectangles out of three, are identical

OpenStudy (mathmath333):

|dw:1410723790108:dw|

OpenStudy (mathmath333):

and one rectangle is different

OpenStudy (mathmath333):

|dw:1410723882583:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!