In a building there are 25 cylindrical pillars.The radiusof each pillar is 27cm and height is 4cm.Find the cost of painting the curved surface area of all pillars at the rate of 8 rs per m2( meter square)?
Answers
Step-by-step explanation:
. The candy shop _________________ S. K. Road closes around 10 o'clock.
. The candy shop _________________ S. K. Road closes around 10 o'clock.
. The candy shop _________________ S. K. Road closes around 10 o'clock.
Cost of painting 25 cylindrical pillars is Rs. 13.4
Step-by-step explanation:
Given :
Height of each pillar = 4 cm =
Radius of each pillar = 27 cm =
Curved Surface Area of 1 Pillar
Curved Surface Area = 2πrh
=
= 2 x 3.14 x .27 x 0.04
= 0.067 m²
Total number of pillars = 25
Total curved surface area of 25 pillars = 25 x 0.067 = 1.675 m²
Cost of painting is Rs. 8 per m²
∴ Total cost of painting = 1.675 x 8 = Rs. 13.4
To Learn More.....
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