If the 26 bricks are each 7 cm, seems like multiplication or repeated addition would solve the problem. Multiplication would be faster. 26 x 7 = 182 182 cm tall.
If each individual brick is 7 cm tall, then to get the answer you have to multiply 26 x 7 Because there are 26 bricks that are 7 cm long. 26 x 7 = 182 Hope this helped!