the diameter of a roller is 84cm and it's length is 120cm. it takes 500complete revolutions to move once over to level a play ground. Find the area of the playground in square metre
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the diameter of a roller is 84cm and it's length is 120cm. it takes 500complete revolutions to move once over to level a play ground. Find the area of the playground in square metre
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h=1.2m
CSA=2πrh
= 3.168m²
if takes 500 revolutions
= 3.168*500
=1584m²
Answer:
Step-by-step explanation:
Given the diameter of a roller is 84 cm and it's length is 120 cm. It takes 500 complete revolutions to move once over to level a play ground.
we have to find the area of playground
Diameter of roller=84 cm
Radius=42 cm=0.42 m
Height=120 cm=1.2 m
Curved surface area=2πrh=2(3.14)(0.42)(1.2)
= 3.168 square meter
Now given if takes 500 revolutions to move once over to level a play ground.