A cuboid built from 1-cm unit cubes has a volume of 90 cm³. Its length is 6 cm and its width is 5 cm. What is its height?
Show Worked Solution
Worked Solution
Step 1: Write the formula: Volume = length × width × height.
Step 2: Substitute the known values: 90 = 6 × 5 × height.
Step 3: Compute the product of the two known dimensions: 6 × 5 = 30.
Step 4: Divide: height = 90 ÷ 30 = 3.
The height is 3 cm.
Check: 6 × 5 × 3 = 90 ✓
Answer: 3 cm
Correct answer: 3 cm
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