Question

The radius of a roller is 0.7m and it is 2m long, then the area covered by it in 10
revolution is
2) 80m
1) 70m²
3) 88m2
4) 78m?
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Answer 1

4 is x correct answer to do your

Answer 2

Answer:

3) 88m^2

Step-by-step explanation:

For one revolution

Curved surface area=2πrh=2× 22/7×7/10

For 10 revolutions

Curved surface area= 2×22×2/10×10=88m^2