Handy lengths

This task is about understanding length.

Question

 
Jenny measured the length of her bedroom using her hand span. She said, "My room is 21 hands long".
Her little sister, Suzie, used her hand span to measure Jenny's bedroom and said, "No, your room is 29 hands long".
 
Whose measurement is correct? (Select one)

    • Suzie is correct

    • Jenny is correct

    • Both are correct

    • Neither is correct

Explain why you decided on your answer: