A rectangular corridor in an HDB block has 48 square tiles on its floor. Each tile measures 1 m by 1 m. The corridor is 4 m wide. What is the perimeter of the corridor?
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Worked Solution
Step 1: Find the area of the corridor.
The corridor has 48 tiles, each 1 m × 1 m, so the area = 48 × 1 = 48 m².
Step 2: Find the length of the corridor.
Area = Length × Width
48 = Length × 4
Length = 48 ÷ 4 = 12 m
Step 3: Find the perimeter.
Perimeter = 2 × (Length + Width)
Perimeter = 2 × (12 + 4)
Perimeter = 2 × 16
Perimeter = 32 m
Correct answer: 32 m
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