What is octdecagon?

What is 4.08 rounded to the nearest tenth? What it 10mm converted to km? How old is piinksparkles? How do you write 2650? What is bigger 9000 g or 8 kg? What is the connotative meaning of accumulated? What is the measurement 111.009 rounded off to four significant digits? What is 45.72 rounded to the nearest whole number? What is the fractions of 56? Why is set square named so? What is 53.238 to the nearest decimal? What is a convincing argument that logically shows why a conjecture is true? How do you change 2.68 into a fraction? 1.5 times 10times 10 times 10 times 10 times 10? What does bps mean? How many square feet of flooring will 700 linear feet of 7 inch wide wood cover? What is nine fourths divided by three fourths? How can i answer the question of what are your week points? Which one of the numbers does not belong in the following series 24 - 28 - 30 - 32 - 36 - 38? What is 45 divided by 16?