Name two innovations or inventions that came about during world war ii. explain why such innovations occur during a time of war.
historians generally rate franklin d. roosevelt as one of the three greatest american presidents. describe at least three of roosevelt's accomplishments that would lead historians to rank him so highly.

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34