Answer:
2260.8cm^2
Step-by-step explanation:
Area of cross - section x 2 = 3.14 x r^2 x 2= 3.14 x 144 x 2= 904.32cm^2
Area of curved surface = pi x d x 18 = 3.14 x 24 x 18 = 1356.48cm^2
Total surface area = 1356.48 + 904.32 = 2260.8 cm^2
