a cylindrical pillar is 50 cm in diameter 3.5 m in height.find the cost of painting the curved surface of the pillar at the rate of rupees 12.50 per m^2
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Heya !!!
Diameter of cylindrical pillar = 50 cm = 0.5 m
Radius = D/2 = 0.5/2 = 0.25 cm
And,
Height of cylindrical pillar = 3.5 m
CSA of cylindrical pillar = 2πRH
=> 2 × 22/7 × 0.25 × 3.5
=> ( 2 × 22 × 0.25 × 0.5 ) m²
=> 5.5 m²
Cost of painting per m² = ₹ 12.50
So,
The cost of painting of 5.5 m² = ( 12.50 × 5.5 ) =
=> ₹ 68.75
★ HOPE IT WILL HELP YOU ★
Diameter of cylindrical pillar = 50 cm = 0.5 m
Radius = D/2 = 0.5/2 = 0.25 cm
And,
Height of cylindrical pillar = 3.5 m
CSA of cylindrical pillar = 2πRH
=> 2 × 22/7 × 0.25 × 3.5
=> ( 2 × 22 × 0.25 × 0.5 ) m²
=> 5.5 m²
Cost of painting per m² = ₹ 12.50
So,
The cost of painting of 5.5 m² = ( 12.50 × 5.5 ) =
=> ₹ 68.75
★ HOPE IT WILL HELP YOU ★
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