Final answer:
To find the total cost of 4 T-shirts at AED 49 each, multiply 49 by 4, which equals AED 196.
Step-by-step explanation:
To calculate the total cost of buying 4 T-shirts that cost AED 49 each, Hamad can use the expression 49 × 4. This expression represents the product of the price per T-shirt and the number of T-shirts being purchased. Multiplication is the operation needed here because Hamad is buying multiple items of the same price. Therefore, the total cost would be the result of this multiplication, which is AED 196 (49 times 4).