The problem asks to calculate the area of a book in square meters, given its dimensions in centimeters. The dimensions are $21.4$ cm by $28.0$ cm.

1. Problem Description

The problem asks to calculate the area of a book in square meters, given its dimensions in centimeters. The dimensions are $21.4$ cm by $28.0$ cm.

2. Solution Steps

First, we calculate the area of the book in square centimeters.

Area in $cm^2$ = length * width

Area in $cm^2 = 21.4 cm * 28.0 cm = 600 \ cm^2$ (approximately)

Next, we convert the area from square centimeters to square meters. We know that 1 meter = 100 cm. Therefore, 1 $m^2$ = $(100 cm)^2$ = 10000 $cm^2$.

To convert the area from $cm^2$ to $m^2$, we divide by

1

0

0

0

0. Area in $m^2$ = Area in $cm^2$ / 10000

Area in $m^2 = 600 cm^2 / 10000 cm^2/m^2$

Area in $m^2 = 0.06 m^2$

3. Final Answer

The area of the book is $0.06 \ m^2$.