Question

How many centimeters are there in a decimeter?

Hint:

1 decimeter = 10 centimeters. Remember that "deci-" means one-tenth of a meter.

Answer 1

Step 1: Understanding metric units
The metric system defines the following:
- 1 meter = 10 decimeters
- 1 meter = 100 centimeters
Therefore, \[ 1 \text{ decimeter} = \frac{100}{10} = 10 \text{ centimeters} \]

Step 2: Check all options
- (A) 15 cm — Incorrect
- (B) 20 cm — Incorrect
- (C) 40 cm — Incorrect
- (D) 30 cm — Incorrect
None of the options match the correct value of \(10 \text{ cm}\).
\[ \boxed{\text{Correct Answer: None of the above (should be 10 cm)}} \]