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Find the surface area of the composite figure.

 

 Aug 20, 2020
 #1
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Starting with the purple figure,

 

(4x3) + 2(8x3) + 2(8x4) = 12 + 48 + 64 = 124cm^2

 

Next the yellow figure,

 

2(5x10) + 2(5x7) + (10x7) + ((10x7) - (4x3)) = 100 + 70 + 70 + 58 = 298cm^2

 

Total surface area = 124 + 298 = 422 cm^2

 Aug 21, 2020

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