The weather is getting hotter and hotter, and the merchants hold ice cream promotion activities. They put the ice cream into the cylindrical and conical cups below, and the cylindrical one costs 2 yua

The weather is getting hotter and hotter, and the merchants hold ice cream promotion activities. They put the ice cream into the cylindrical and conical cups below, and the cylindrical one costs 2 yuan. According to the chart, it can be concluded that the base and height of cylinder and cone are equal.

So the volume of a cylinder is three times that of a cone.

8 Angle =0.8 yuan,

Because 0.8×3=2.4 (yuan), 2.4 > 2,

So buying cylindrical ice cream is cost-effective.

A: Buying cylindrical ice cream is cost-effective.