Answer:The dimensions ⇒ 3 × 4Step-by-step explanation:* Any matrix has two dimensions- Raw and column- The dimensions very important in the operations on matrices- We called the number of raw m and the number of column n- We must write the number of raw before the number of column- m × n is the dimensions of the matrix* Example : If the dimension of a matrix is 2 × 3, that means the matrix has 2 raw and 3 column* Now lets look to our problem∵ It has 3 raw and 4 column∴ Its dimensions is 3 × 4