# <span lang= From the figure,

Radius of the hemisphere = 8 cm

Height of the cone = 15 cm

Lateral length of the cone = √(h2 + r2) = √(152 + 82) = 17 cm

Curved surface area of hemisphere = 2πr2

Curved surface area of the cone = πrl

Total curved surface area of the toy = 2πr2 + πrl

Total curved surface area of the toy = 2 × (22/7) × 82 + (22/7) × 8 × 17

Total curved surface area of the toy = 829.714 cm2

Cost of painting the toy at Rs. 7 per 100 cm2 Rate this question :

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