What wall can stop 7.62 rounds?

What are the four operations in math that you mostly use? How many credits do you need to graduate with a doctoral degree? What is 56.45 in scientific notation? What fraction is equal to 60 over 64? What times what equals 114? How do you write 12 as a decimal number? Is an obtuse triangle only have one angle? What are example of some not equivalent fractions? What type of verb is appeared? How many times can 231 go into 28? What is a non standard form of measurement? A carpenter needs two pieces of lumber which together are 21 feet long the longer piece needs to be 1 foot longer than three times the length of the shorther piece find the length of each piece? What are two identical lines called? What are 3 words that are exactly the same spelled frontwards and backwards? What is the noun form of affirm? What is simplest form of 18 out of 24? A man turns a bucket of water upside down but the bucket remains full the bucket has no lid the water is not frozen the man is not in space or not swinging the bucket around? What power of 2 is closest to 1000? How many hundred thousands are in 200000? What is the base of a triangle with an area of 14 in squared and height of 4 in?