What are the main ingredients that make up concrete? Sand Gravel.Portland Cement Water Only Portland Cement Rocks, Grass. Sand. Shells Portland Cement, Water Sand, Water, Portland Cement 3 Multiple Choice 1 point Which of the following is NOT an example of reinforcement that could be used in concrete? Rebar Large Rocks Wire Paneling Mesh Wire 4 Multiple Choice 1 point What is the formula to determine volume? BxH

## Step 1<br />The first question is about the main ingredients that make up concrete. Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement that hardens over time. The main ingredients of concrete are sand, gravel, water, and Portland cement.<br /><br />## Step 2<br />The second question is about the types of reinforcement that could be used in concrete. Rebar, wire paneling, and mesh wire are all examples of reinforcement materials used in concrete. However, large rocks are not typically used as reinforcement in concrete.<br /><br />## Step 3<br />The third question is about the formula to determine volume. The formula to determine volume is length times width times height, or \(BxH\).