Question

solve this question 16​

Answer 1

Hey dost here is your answer

radius = 0.7/2

= 7/20

height = 2

Area covered in 1 revolution = 2πrh

= 2× 22/7 × 7/20 ×2

=44/10

Area covered in 60 revolution= 44/10× 60

= 264

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Answer 2

Length = 2m

Diameter= 0.75

Radius :

$\frac{d}{2} \\ \frac{0.75}{2} \\ 0.35$

No of revolution (given) = 60m

Area => no.of revolution × 2πrh

$= > 60 \times \times \frac{22}{7} \times \frac{35}{100} \times 2 \\ = > 12 \times 22 \\ = 264 {m}^{2}$

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