Alexander measures a stack of textbooks to be 38.2 cm tall. If there are 10 textbooks in the stack, how tall is each textbook?

3.82 cm tall.

Step-by-step explanation:

Alexander measures a stack of textbooks to be 38.2 cm tall. If there are 10 textbooks in the stack, how tall is each textbook?

From the above question:

1 stack = 10 textbooks = 38.2 cm tall

Hence,

10 textbooks = 38.2 cm tall

1 textbook = x cm

Cross Multiply

10 x = 1 × 38.2

x = 38.2/10

x = 3.82 cm tall

Therefore, each textbook is 3.82 cm tall.