How many old pennys were in a groat?

Formula for surface area of a cylinder? What is the value of the following expression 50 divided by 2 minus 5 multiplied by 4 plus 1? Is the product of a rational number and its multiplicative inverse always one? What is 19.6 plus 22.8 х 4.4 - 2.9? What is the square root of negative two? How do you write 525 in expanded notation with the powers of ten? What are not multiples of 2? What two factors of 6 can be added together to equal 8? Which part of the trinomial will equal the sum of p and q? What is one divided by one half? A line that intersects two coplanar lines at two distinct points is called what? What is the key to system of counting? Who the plays timed mode? What is the fractional and percent notation for .83 with the three repeating? How do you perform set? What is the function of the auricularis? What can you conclude about the types of rational numbers that have repeating decimals? What is the ratio 6 to 18? Why was there 11 days missing in 1752? How many electrolytes does apples have?