485,165 views
3 votes
3 votes
Find the surface area of this prism. geometry hw

Find the surface area of this prism. geometry hw-example-1
User AngelsandDemons
by
3.1k points

2 Answers

9 votes
9 votes

Answer: A=395.2

Explanation:

A=2(wl+hl+hw)

A=2[(12.7x5.78)+(6.72x5.78)+(6.72x12.7)]

A=2(73.406+38.8416+85.344)

A=2(197.5916)

A=395.1832

Rounded to nearest tenth..

A=395.2

User Eumcoz
by
2.6k points
24 votes
24 votes

Answer:

395.2 cm²

Explanation:

2x12.7x6.72=170.688

2x6.72x5.78=77.6832

2x5.78x12.7=146.812

170.688+77.6832+146.812=395.1832

User Franz Ebner
by
3.2k points