The diameter of a roller is 70 cm and its length is 1.5 m. It takes 1000 complete revolutions moving once over to level a stadium. Determine the area of the stadium
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Answer:
Given:-
- Diameter of roller is 70cm
- length of roller is 1.5cm
- Number of revolution is 1000
To Find:-
- Area of stadium
Formula used:-
- Curved surface area of cylinder
ATQ
Length of roller = 1.5m = 150cm
Diameter = 70cm
Radius = 35cm
C.S.A of cylinder = 2πrh
C.S.A = 2×22/7×35×150
C.S.A = 2×22×5×150
C.S.A = 33000cm²
Area of stadium = C.S.A of roller × No. of revolution
a = 33000×1000
a = 33000000cm²
The area of stadium is 33000000cm².
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