Caleb gave the cashier $20 to buy two identical christmas cards there were no sales tax or any other charges . the cashier gave calab $17.08 back how much did one card cost

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8