a metallic pipe is 0.7 cm thick .Inner radius of the pipe is 3.5 cm and length is 5 dm .Find its total surface area
Answers
Answer :
- Total surface area of pipe is 2453.88cm²
Given :
- Thickness of pipe is 0.7m
- inner radius of pipe (r) is 3.5cm
- Length is 5dm = 50 cm
- External radius of the pipe (R) = (3.5 + 0.7) = 4.2 cm
To find :
- Total surface area
Solution :
Given that , a metallic pipe is 0.7 cm thick and inner radius of the pipe is 3.5 , length is 5 dm which means 50 cm and also find the External radius . so we have to use the formula of total surface area then we get total surface area of pipe
External radius of the pipe (R) = (3.5 + 0.7) = 4.2 cm
As we know that
- Total surface area of pipe = 2π (r + R) (h + R - r)
where , r is inner radius 3.5cm , R is External radius 4.2cm , h is 50cm.
⟹ TSA of pipe = 2π (r + R) (h + R - r)
⟹ TSA of pipe = 2 × 22/7 (3.5+ 4.2) (50 + 4.2 - 3.5)cm²
⟹ TSA of pipe = 44/7 × 7.7 × 50.7 cm²
⟹ Total surface area of pipe = 2453.88cm²
∴Total surface area of pipe is 2453.88cm²
Answer :
Total surface area of pipe is 2453.88cm²
Given :
Thickness of pipe is 0.7m
inner radius of pipe (r) is 3.5cm
Length is 5dm = 50 cm
External radius of the pipe (R) = (3.5 + 0.7) = 4.2 cm
To find :
Total surface area
Solution :
Given that , a metallic pipe is 0.7 cm thick and inner radius of the pipe is 3.5 , length is 5 dm which means 50 cm and also find the External radius . so we have to use the formula of total surface area then we get total surface area of pipe
External radius of the pipe (R) = (3.5 + 0.7) = 4.2 cm
As we know that
Total surface area of pipe = 2π (r + R) (h + R - r)
where , r is inner radius 3.5cm , R is External radius 4.2cm , h is 50cm.
⟹ TSA of pipe = 2π (r + R) (h + R - r)
⟹ TSA of pipe = 2 × 22/7 (3.5+ 4.2) (50 + 4.2 - 3.5)cm²
⟹ TSA of pipe = 44/7 × 7.7 × 50.7 cm²
⟹ Total surface area of pipe = 2453.88cm²
∴Total surface area of pipe is 2453.88cm²