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)