3.14×2 2+2×3.14×2×1.5,
=12.56+18.84,
=31.4(平方米);
3.14×2 2×1.5,
=12.56×1.5,
=18.84(立方米);
答:镶瓷砖的面积是31.4平方米,水池能容纳18.84立方米的水.