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What could the SA of this cuboid be? There are two different answers. Help appreciated.

2007-02-04 05:38:30 · 2 answers · asked by rosh n 1 in Science & Mathematics Mathematics

2 answers

Arrangement 1
Place 3 cubes as front with 3 cubes behind.
This means 2 cubes as right face and 2 cubes as left face
Top has 6 faces and bottom has 6 faces.
Surface area of each face = 4 cm²
Area (front + back ) = 6 x 4 cm² = 24 cm²
Area (right + left) = 4 x 4 cm² = 16 cm²
Area (top + bottom) = 12 x 4 cm² = 48 cm²
Total = 88 cm²

Arrangement 2
Place 6 cubes side by side
Area ( front + back) = 12 x 4 cm² = 48 cm²
Area (right + left ) = 2 x 4 cm² = 8 cm²
Area (top + bottom) = 12 x 4 cm² = 48 cm²
Total = 104 cm²

2007-02-04 06:26:10 · answer #1 · answered by Como 7 · 0 0

If you stack them to make a cuboid with a 1 cube base 6 cubes tall, then the surface is 26 squares each 4 cm², for an SA of 104 cm². If you lay the six out in 2 rows of 3, then top + bottom = 6+6, front + back = 3+3, and left + right = 2+2, for a total of 22 squares, or 88 cm².

2007-02-04 13:48:05 · answer #2 · answered by Philo 7 · 0 0

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