Find the curved surface area of a frustum cone with larger and smaller radii of 35 m and 10 m, respectively. The slant height is 45 m. (Use π = 3)

The curved surface area of a frustum is given by the formula,

 CSA = π(R+r)l

We have, R = 35 m, r = 10 m, l = 45 m

Therefore,

CSA = 3 (35 + 10) × 45

⇒ CSA = 3 × 45 × 45

⇒ CSA = 6,075 m²

So, the curved surface area of the given frustum is 6,075 m².