Help, will give brainlest thanks so much!1

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

Shirley spelled 12 of her 15 spelling words correctly on the test. what percentage did shirley get on the test?

Abank manager wants to encourage new customers to open accounts with principals of at least $2,500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?