The elevation we call sea level is actually the average level of the sea. this means that at average sea level, the elevation is zero. in reality, the level of the sea rises and falls in what are called tides. low tide is the point of lowest sea level in a tidal period. high tide is the point of highest sea level in a tidal period. the height above or below average sea level is called elevation. an elevation below sea level is considered a negative value, while an elevation above sea level is positive. winston lives near the ocean. he regularly brings an altimeter to the beach to measure the elevation of the ocean’s surface. you will use the data winston gathered to complete tasks about the rising and falling of the ocean’s surface. when necessary, sketch a diagram of the situation on a separate sheet of paper to assist you. on monday at 1 p. m., when the ocean’s surface was at an elevation of 2.2 feet, winston went to a surf shop that was 8.2 feet above the ocean’s surface. at 7 p. m. when the ocean’s surface was at an elevation of -2.4 feet, winston ate dinner at a restaurant whose deck was 10 feet above the ocean’s surface. what was the distance between the deck and the ocean’s surface at 1 p. m.? which was higher, the deck or the ocean?

Complete the worksheet. use 3.14 for π and round all decimals to the nearest hundredth. find the volume of the composite three-dimensional figure above. important terms are written in bold.1. the pyramid has a square base that is inscribed in the circular base of the cone. draw an image of the composite shape of the base. 2. if the side length of the square base is 8 units long, what is the diameter of the circular base of the cone from the picture in number 1? 3. now that the diameter has been calculated, what is the circular area of the cone? ignore the square base of the pyramid.? 4. what is the formula for volume of a cone? 5.to calculate the volume of the cone, the height is still needed. if the cone has a lateral surface with a length of 13 units, what is the height of the cone? 6.now find the volume of the cone. do not include the empty space for the pyramid. 7.. the side length of the square base of the pyramid is 8 units long. what is the base area of the pyramid? 8.what is the formula for the volume of a pyramid9. since the cone and the pyramid share the same vertex, what is the volume of the pyramid10.using the volume of the cone and the pyramid, find the volume of the composite shape. remember, the pyramid is empty. 11,. referring to the picture in number 1, what is the area of the composite base knowing that the square is empty? 12what is the formula to find the lateral surface area of a cone? (13find the lateral surface area of the cone14what is the lateral surface area shape of the pyramid? what is the formula for its area? 15to find the lateral surface area of the pyramid the length is still needed. calculate the lateral surface length of the pyramid. 16 now that the lateral surface length is known, what is the lateral surface area of the pyramid17. using the lateral surface areas of the cone and pyramid, along with the area of the composite base, what is the total surface area?