Standard Mathematics Primary 4 Geometry

In art class, Wei Lin builds a solid using identical unit cubes. The bottom layer has 3 cubes placed side-by-side in a straight row. On top of the leftmost cube of the bottom row, he stacks 2 more cubes (one directly above the other). When Wei Lin looks at his solid from directly in front, how many unit squares does he see in the front view?

A 4
B 5
C 6
D 7
Show Worked Solution

Worked Solution

Step 1: Identify what the front view shows. The front view is the 2-D shape you see when looking straight at the solid from the front — each visible cube face counts as one unit square. Step 2: Count the squares in the bottom row of the front view. The bottom layer has 3 cubes in a row, so the bottom row of the front view shows 3 unit squares. Step 3: Count the squares in the stacked column. 2 cubes are stacked on top of the leftmost bottom cube, adding 2 more unit squares above the leftmost square. Step 4: Add up all visible squares: 3 (bottom row) + 2 (stacked above leftmost) = 5 unit squares. Final answer: 5. Answer: 5

Correct answer: 5

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