6. A garden roller is 75 cm in diameter and 105 cm in
width. What area does it cover in 14 revolutions ?
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Answer:
Step-by-step explanation:
d = 75 cm
r = 75/2 cm
width or h = 105 cm
csa = 2πrh
= 2 × 22/7 × 75/2 × 105
= 2 × 11/7 × 75 × 15
= 24750
we got the area covered in 1 revolution is 24750 cm²
area covered in 14 revolutions = 24750 × 14 = 346500 cm²
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