A=πr2=π·92≈254.469
your answer is 254.469
12 x 6s - 8 x 4s = 72s - 32s = 40s
Answer:
7 is the answer you're looking for
An imaginary number is a complex number that can be written as a real number multiplied by the imaginary unit i, which is defined by it's property i² = −1. The square of an imaginary number bi is −b². For example, 5i is an imaginary number, and it's square is −25.
