Given: A circus tent is cylindrical to a height of 4 m and conical above it.

Its diameter is 105 m and its slant height is 40 m.

CSA of the Cylinder is given by: 2πrh (here, r and h are radius and height respectively)

Let V₁ be the CSA of the cylindrical part of tent

∴ V₁ = 2πrh

⇒ V₁ = 2 × π × × 4 = 1320cm² (here diameter is 105 cm, ∴ radius = cm)

CSA of the cone is given by: πrl (here, r and l are radius and slant height respectively)

Let V₂ be the CSA of the conical part of tent

∴ V₂ = πrl

⇒ V₂ = π × × 40 = 6600 cm² (here diameter is 105 cm, ∴ radius = cm)

∴ Total area of the canvas is V₁ + V₂

∴ V₁ + V₂ = 1320 + 6600 = 7920cm²

∴ Total area of the canvas is: 7920 cm²