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please help answers question 6 through 8, real answers only please this is the third or fourth time I've had to repost this​

Please Help Answers Question 6 Through 8 Real Answers Only Please This Is The Third Or Fourth Time Ive Had To Repost This class=

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Answer:

6.

volume=l×b×h=11×3×4=132in³

surface area =2(lb+bh+lh)=2(11×3+3×4+11×4)=178in²

7.

lateral surface area of traingular prism=perimeter of traingle ×length=[5+3+4]×6=72cm²

curved surface area=2[area oftraingle]=2×1/2×4×3

=12cm²

now

total surface area=72cm²+12cm²=84cm²

8.

volume of traingular prism=area of traingle ×length

=1/2×12×3.4×4=81.6in³

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