The diameter of a garden roller is 15.4 cm and it is 20.5cm long . Find the area covered by it in 60 revolution
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Answer:
Approx. 59,478 cm²
Step-by-step explanation:
Radius = 7.7 cm
Height = 20.5 cm
CSA = 2πrh
= 2 × 3.14 × 7.7 cm × 20.5 cm
= 6.28 × 157.85 cm²
= 991.298 cm²
≈ 991.3 cm²
Number of revolutions = 60
Area covered ≈ 991.298 cm² × 60
≈ 59478 cm²
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