Answer:
471.24 m²
Step-by-step explanation:
Formula for curved surface area is;
A = 2πrh
We are given dimensions of a single pillar as;
Height; h = 7.5 m
Radius of base; r = 2.5 m
Thus;
A = 2π × 2.5 × 7.5
A = 117.81 m²
Since there are 4 pillars.
Total curved surface area is;
A_t = 4 × 117.81
A_t = 471.24 m²
