Answer:
About 6 inches tall.
Step-by-step explanation:
One book has a thickness of 2[tex]\frac{3}{7}[/tex] inches.
Another book has a thickness of 3.56 inches
Converting 2[tex]\frac{3}{7}[/tex] inches to decimals will give; 2.4285714286 inches
If the books are stacked together, they become 2.4285714286 inches + 3.56 inches = 5.988571429 inches tall or about 6 inches tall (answer rounded up to nearest whole number).