What does ceilers mean?

Formula for total surface area of a hemisphere? What is the formula for a polygon? What is the name of a sixteen-sided polygon? What shape best represents Ender from Ender's Game? What is the name of 70 sided polygon? Name a parallelogram that is not a square or rectangle? What is the Radius of a sphere with a volume of 523.6 cm3? When do you use angles in real life? Two angles are supplementary their sum is 180 One angle is 27 less than twice the other Find the measure of each angle? Need a picture of an oblique pyramid? What angle degree does a skinny rhombus have? What instrument measures angle of elevation and angle of depression? What would be the answer to classify each of these figures as many ways as possible i have to write quadrilateral parallelogram square rectangle rhombus or trapezoid what would be the an? How many plans of symmetry does a triangular prism have? How many tile in a box? What is the PI value of power transformer? Find the number of connections needed to be used in Mesh topology in network of 8 and also find that how many IO ports are needed for each device? How many sq feet in 500 sq metres? How do you calculate perimeter in acres? How do you work out interior and exterior angles?