Answer:
Step-by-step explanation:
base area = 8×12 = 96 cm²
lateral area = 2(8×10) + 2(12×10) = 400 cm²
The top is a half cylinder of radius 6 cm and length 8 cm.
half-cylinder surface area = πrh + πr² = 84π ≅ 263.9 cm²
total surface area = 96 + 400 + 263.9 + 759.9 cm²
