-19 < -30. You're welcome!!
Answer:
53 cm
Step-by-step explanation:
Using Pythagoras Theorem,
The hypotenuse


= 53 cm
Lets try
centimeter is about 1/2 of a inch
if 28 square cm, the book coould be about 4m by 7cm (aoub the size of a recipt)
if 28 square in the book could be about 4in by 7in (regular size)
I would guess 28 square INCHES (cm is too smal)