Chapter 1 - Measurement and Problem Solving - Learning Path Questions and Exercises - Exercises - Page 31: 63

No, it is not a good deal.

Area of 12 inch pizza = $\frac{22}{7}\times 6^{2}=113.1 inch^{2}$ Area of 8 inch pizza = $\frac{22}{7}\times 4^{2}=50.3 inch^{2}$ So, total area of 2 such pizzas = $50.3 \times 2 = 100.6 inch^{2}$ which is still smaller than the area of the 12 inch pizza. So, it is not a good deal.