Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. Geometric measurement: understand concepts of volume and relate volume to multiplication and to addition. Solve real-world and mathematical problems involving area, volume and surface area of two- and three-dimensional objects composed of triangles, quadrilaterals, polygons, cubes, and right prisms. Solve real-world and mathematical problems involving volume of cylinders, cones and spheres. Explain volume formulas and use them to solve problems. Apply geometric concepts in modeling situations.