Question

Help due tomorrow!!

Answer 1

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

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

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`