For a certain kind of plaster work, 1.9 cu yd of sand are needed for every 100 sq yd of surface. How much sand will be needed for 370 sq yd of surface? \( \square \) cu yd of sand will be needed for 370 sq yd of surface. (Simplify your answer.)

To find out how much sand is needed for 370 sq yd of surface, you can set up a proportion based on the given information. Since 1.9 cu yd of sand is required for every 100 sq yd, you can use the formula: \[ \text{Sand needed} = \left(\frac{1.9 \, \text{cu yd}}{100 \, \text{sq yd}}\right) \times 370 \, \text{sq yd} \] Calculating this gives: \[ \text{Sand needed} = \frac{1.9 \times 370}{100} = 7.03 \, \text{cu yd} \] So, 7.03 cu yd of sand will be needed for 370 sq yd of surface.