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gabbyalicorn
 one year ago
What is the surface area of the figure?
A.
408 ft2
B.
458 ft2
C.
545 ft2
D.
720 ft2
gabbyalicorn
 one year ago
What is the surface area of the figure? A. 408 ft2 B. 458 ft2 C. 545 ft2 D. 720 ft2

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gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0https://www.dropbox.com/s/pf2mpkxygxodzew/Screenshot%2020150606%2015.09.21.png?dl=0

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1here, we have 2 polygons like this: dw:1433628608805:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1now the area of that polygons is equal to the sum between the areas of these rectangles: dw:1433628687622:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1namely area = 7*7+5*12=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1dw:1433628731560:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1we have: area = 49+60=...?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1next we have a rectangle like this: dw:1433628823525:dw and its area is: 5*12=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1now we have a rectangle like this: dw:1433628877197:dw and its area is: 5*7=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1next we have another rectangle like this: dw:1433628948365:dw and its area is: 5*7=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1finally we have a rectangle like this: dw:1433629114144:dw more precisely it is a square. Its area is: 5*5=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1ok! So the total surface is: 109+109+60+35+35+25=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! please wait I check my computations

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1I forgot 2 rectangles

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1we have one rectangles like this (the base of your prism): dw:1433629412234:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1and its area is: 12*5=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1finally, we have one rectangle like this: dw:1433629472041:dw which is a square, namely the top of your prism. Its area is: 5*5=...

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so the total surface of your prism is: 109+109+60+35+35+25+60+25=...

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0:D Thank you so much for helping me words cant describe how thankful i am!
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