brinley456 brinley456

22-02-2018
Mathematics

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Help please and explain how u got it with stepsss

Help please and explain how u got it with stepsss class=

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Аноним Аноним

22-02-2018

Number of surface = 5

Surface 1: 8 x 5 = 40 . [The left side]
Surface 2: 15 x 5 = 75 . [The bottom side]
Surface 3: 17 x 5 = 85 . [The slanted side]

[Surface 4 and 5 are triangles and they have the same surface area]
Surface 4 : 1/2 x 15 x 8 = 60
Surface 5 : 60

Total : 40 + 75 + 85 + 60 + 60 = 320 square units

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