Height of a 12 year old boy would be measured in cm m or km?

Tina practice piano for 15 hours last month and 45 hours this month use multiplication to write a statement comparing me i was tina practice during the two months use addition to write a statement comparing the hours tina practice during the two months

Write the following as a base and exponent

The reflexive property of congruence lets you say that ∠pqr ≅