A cylindrical pillar is 50 cm in diameter and 3.5 m in hight. Find the cost the cost of painting the curved surface of the pillar at the rate of Rs 12.50 per m2
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CYLINDRICAL PILLAR:
DIAMETER=50m
we know that ,
radius is half of the diameter
RADIUS=1/2Diameter
Radius=1/2×50
Radius=25m
HEIGHT=3.5m
CURVED SURFACE AREA OF A CYLINDER=2πrh
=2×22/7×25×3.5
=2×22×25×0.5
=44×12.5=
=550sq.cm
thus the curved surface area of the cylindrical pillar is 550 square cm
cost of painting :
curved surface area of cylindrical pillar×rate of painting
550×12.50
=6875₹
Therefore we get the cost of painting the pillar is ₹6875
HOPE THIS HELPS!!!
DIAMETER=50m
we know that ,
radius is half of the diameter
RADIUS=1/2Diameter
Radius=1/2×50
Radius=25m
HEIGHT=3.5m
CURVED SURFACE AREA OF A CYLINDER=2πrh
=2×22/7×25×3.5
=2×22×25×0.5
=44×12.5=
=550sq.cm
thus the curved surface area of the cylindrical pillar is 550 square cm
cost of painting :
curved surface area of cylindrical pillar×rate of painting
550×12.50
=6875₹
Therefore we get the cost of painting the pillar is ₹6875
HOPE THIS HELPS!!!
vikash12345:
this heloed a lot
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