Answer:
B. 324 cm²
Step-by-step explanation:
Simply solution.
Look at the picture.
From the bottom we have as many squares as at the top (10).
All squares is 26 + 10 =36.
The area of one square is A = 3² = 9 cm²
The surface area:
S.A. = (36)(9) = 324 cm²
