Current location - Training Enrollment Network - Books and materials - The area of the school library is 85 square meters. 100 is a square tile with a side length of 0.9 enough? such as
The area of the school library is 85 square meters. 100 is a square tile with a side length of 0.9 enough? such as
0.9X0.9X 100

=8 1 m2

So the square brick of 100 0.9 is not enough.

In addition:

(85-8 1)÷(0.9X0.9)

=4÷0.8 1

≈5 yuan