Question 5
Ms. Liên combines ten rectangular cards of size $2\text{ cm}\times3\text{ cm}$ to make a larger rectangle.
If the width of the overlapping part between any two adjacent cards is 0.3 cm (see the diagram below), what is the area, in cm², of the largest rectangle that she can make?
If the width of the overlapping part between any two adjacent cards is 0.3 cm (see the diagram below), what is the area, in cm², of the largest rectangle that she can make?