C = 2PIr
C = 2 * 3.14 * 3 = 18.84 cm
Answer: A . Not all 2 × 2 matrices have an inverse matrix. If the determinant of the matrix is zero, then it will not have an inverse; the matrix is then said to be singular. Only non-singular matrices have inverses.
Step-by-step explanation:
Answer: Hi! 15/32, I think!
