Answer:
Step-by-step explanation:
We know that:
- Surface area of cylinder formula: 2πrh + 2πr²
- Height = 18 cm
- Diameter = 24 cm
- Radius = 12 cm
Solution:
- Surface area of cylinder = 2πrh + 2πr²
- => (2 x π x r x h) + (2 x π x r²)
- => (2 x 22/7 x 12 x 18) + (2 x 22/7 x 12²)
- => (44/7 x 12 x 18) + (44/7 x 144)
- => (44/7 x 216) + (44/7 x 144)
- => (1357.7) + (905.1)
- => 2262.8 cm² = Surface area of cylinder
Hence, the surface area of the cylinder is 2262.8 cm².
