Daily Math Challenge
A microscope magnifies 400x. A cell appears to be 8 mm wide. What is its actual width in micrometers? (1 mm = 1000 μm)
Answer
20 μm
📝 Step-by-Step Solution
1
Apparent width: 8 mm
2
Magnification: 400x
3
Actual: 8 ÷ 400 = 0.02 mm = 20 μm
💡 Helpful Hints
• Divide apparent size by magnification
• Convert mm to micrometers
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