Correct Answer - Option 1 : 60.06

**Given:**

Diameter of cone = 8.4m

Height of cone = 1.75m

**Formula:**

Curved surface area of cone = πrl

**Calculation:**

Radius of cone = 8.4/2 = 4.2 m

(Slant height)^{2} = radius^{2} + height^{2}

(slant height)^{2} = 4.2^{2} + 1.75^{2} = 20.7025

Slant height = 4.55 m

Curved surface area of cone = πrl

= 22/7 × 4.2 × 4.55

= 60.06

**∴ Area of canvas required is 60.06 m**^{2}.