The diameter of a roller is 54cm and its length is 120cm. It takes 500 complete revolutions to move once over to level up a playground. Find the area of playground in m².
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1
Answer:
Step-by-step explanation: diameter=54cm so the radius is half 27cm and the circumference is given so we take the one revolution in per area
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4
Answer:
diameter is double of radius
diameter =54cm so,radius=27cm
height=120cm
LSA of roller =2×pie×r×h
2×3.14×27×120=20349.20
LSA of 1 revolution completed by roller=20349.20
so LSA of 500 revolutions =20349.20×500=1017100m square
so area of playground=1017100m square
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