The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in sq m. ?
Answers
Answered by
1
Answer:
332.64m²
Step-by-step explanation:
d=84cm
r=84/2=42cm=0.42m
h=120cm=1.2m
CSA of roller= pi r²h
= 22/7 × 0.42×0.42×1.2
=0.66528m²
No. of revolutions=500
Total area of playground = 0.66528×500=332.64m²
Similar questions