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MrRissso [65]
2 years ago
6

Find the surface area of the composite figure.

Mathematics
1 answer:
Fynjy0 [20]2 years ago
3 0

Answer:

132cm²

Step-by-step explanation:

Split into two shape: Cube & Triangle prism

Cube surface area:

1) area of top & bottom

(4×3)×2= 12×2= 24cm²

2) area of the sides (only three sides as for surface)

(3×6)×3= 18×3= 54cm²

Triangle prism surface area:

1) area of two sides of triangle:

(½×6×4)×2= (3×4)×2= 12×2= 24cm²

2) area of two sides of rectangle:

(5×3)×2= 15×2= 30cm2

Total surface area: 24+54+24+30= 132cm²

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