The bottom shape can be multiplied just like a normal rectangle because the part cut off without measurements fits into the part with measurements. area is length x width so 23 x 38 = 874cm squares. The top is the same so 48 x 70 = 3360 like you already had. The total shape’s area is the two shapes added together which is 874 + 3360 = 4234 The final answer is 4234cm squared
