Question

A cylinder pillar in 50 cm in diameter 3.5m height find the cost of painting the curved surface of the pillar at the rate of 12.50 per metre square​

Answer 1

Answer :

687 , 000 rupees ✔︎

step - by - step Explanation :

➠ GIVEN :•

• Diameter of a Cylindrical pillar = 50 cm

• Height of a cylindrical pillar = 3 . 5 m = 350 cm

• Cost of the painting curved surface of the pillar at the rate of / m² = 12 . 50 rupees .

➠ FIND :•

• Radius of a cylindrical pillar = ???

• Surface area of a curved surface of a cylindrical pillar = ???

• Cost of painting at the rate of 12 . 50 /m² = ???

➠ REQUIRED FORMULA :•

2 Π r h

➠ SOLUTION :•

★ Radius = d ÷ 2 = 25 cm

★ Surface area = 2 Π r h

= 2 × 22 × 25 × 350 cm ²

7

= 44 × 25 × 350 cm²

7

= 385,000 cm²

7

= 55 , 000 cm ²

★ Cost of painting = 55 , 000 × 12 . 50

= 687 , 000 rupees

____________________

~@amna3961 ♧︎︎︎ シ︎

Answer 2

Answer:

A cylindrical pillar is 50 cm in diameter and 3.5 m in height. Find the cost of painting the curved surface of the pillar at the rate of र 12.50 per m2. = र 5.5 x 12.50 = र 68.75

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