Question

Find the surface area

Answer 1

Surface Area formula of a cylinder:
S.A = 2 × Area of base + Perimeter of base × Height of prism
       = 2$\pi$r² + 2$\pi$rh
       = 2$\pi$(10)² + 2$\pi$(10)(100)
{We took 10 ft as the radius because the diameter is 20 ft, so the radius is half the diameter}
       = 200$\pi$ + 2000$\pi$
       = 2200$\pi$ ft² (in terms of $\pi$)
       = 6911.5 ft² (to the nearest tenth)