What is a penundrum?

Is a hexahedron a prism or a pyramid? 22000 square feet is how many square meters? Is 144 a common multiple of12 and 48? What is one eight of 40? In a standard normal distribution 95 of the data is within plus - standard deviations of the mean.? What is the answer to 2x squared minus 9x plus 4? How fast is 343 meters per second? What is the name of a 5 faced triangle? What is the diameter of a 58 cm ball? How many trees were damaged if a storm damaged 12 percent of 6250 trees? How many times does 70 go into 3000? What 689 times 1000? What fraction is 1.00? Which of the following choices is the geometric mean of 11 and 4? What is 100 to the power of 10? Why no form 1040ez after age 65? How many significant figures are in 1.5e-6 x2.34e4? What is the lowest whole number when spelled out in alphabetical order? How do you work out the answer to 588 divided by 6 using bus stop mthod? How many 1kg in 1m squared?