Is a sphere curved

What is used to make quarters? Is 500mcg equal to 0.5 mg? What is the radius of circle with A 169 pi in 2? Show how many inches in 1 yard? When did takethat form? What is the Relationship between particle size and surface areaor the surface area per unit wt of soil? What are 2 equivalent decimals to 5.300? Can all whole numbers be written as a fraction? What is the scientific notation of 5000000000? Are triangles always regular? What numbers come next in the sequence 50001000200? What did the Romans call toilets? How do you write 0000045 in scientific notation? What is the answer of plus 4 plus plus 5 plus plus 8? What is the point-slope equation of a line with slope -5 that contains the point (6 3)? Why if SI units are not used in data analysis? How many ml are in 3km? What is 27-sided polygon called? What is 0.0079 as a percent? What is the quotient of 6 divided by 2 thirds in simplest form?