A company manufactures and paints cylindrical chimneys with radius 12cm and height 25cm. The company has enough paint to cover a 12m2 area. How many chimneys can the company paint?
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Step-by-step explanation:
Curved surface area of cylinder = 2πrh
= 2×22×12×25/7 ≈ 1885 cm² ≈ 1885/10000 m² ≈ 0.18 m²
Number of chimneys that can be painted = 12/0.18 ≈ 66
(Note: if you take full 0.1885 then answer may vary)
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