Question

11. Which of the following pairs relating different units
are true?
1. 40 cm = 4 dm
II. 20 m = 2000 km
III. 30 mm = 3000 cm
IV. 10 m= 100 dm
A. I and Il only B. II and III only
C. III and IV only D. I and IV only​

Answer 1

Correct answer is D(I and IV only).

• 1 dm = 10cm(use this formula to check statement 1)
• 1 km = 1000m(use this formula to check statement 2)
• 1cm = 10mm(use this formula to check statement 3)

• 1m = 10dm(use this formula to check statement 4)

dm denotes decimeter

mm denotes milli meter

cm denotes centimeter

m denotes meter

Answer 2

Answer:

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