Question

Help due tomorrow!!

Answer 1

Answer:

part 1) $SA=1,146\ cm^2$

part 2) $SA=4,120\ mm^2$

Step-by-step explanation:

part 1) we know that

The surface area of the figure is equal to the area of all the faces of the figure

so

$SA=2[(12(9)+(5)(18-9)]+2[(12)(14)]+2[(14)(18)]$

$SA=306+336+504$

$SA=1,146\ cm^2$

part 2) we know that

The surface area of the figure is equal to the area of all the faces of the figure

so

$SA=2[(50)(30)-(50-24)(15)]+2[(10)(30)]+2[(50)(10)]+2[(10)(15)]$

$SA=2,220+600+1,000+300$

$SA=4,120\ mm^2$