1. use euler’s formula to find the missing number.
vertices: 15
edges: 24
faces: ?
• 9
• 10
• 11
• 12
7. what is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? round the answer to the nearest square meter.
• 1,100 square meters
• 1,112 square meters
• 2,507 square meters
• 2,605 square meters
8. the lateral area of a cone is 612 cm2. the radius is 43 cm. what is the slant height to the nearest tenth of a centimeter?
• 4.5 cm
• 7.1 cm
• 9.1 cm
• 14.2 cm