Question

radius of pipe 10cm answer it​

Answer 1

$\huge{\bf{\green{\mathfrak{Question:-}}}}$

• The radius of a circular pipe is 10 cm. What is the length of tape required to wrap around the pipe? (π = 3.14)

$\huge {\bf{\orange{\mathfrak{Answer:-}}}}$

• $\textsf{Radius of the circular pipe = 10 cm.}$

• $\textsf{Tape required to wrap the pipe once,}$

• $\boxed{\sf Circumference \: of \: circle \: = \: 2 \pi r \: units.}$

• $\sf 2 \: * \: 3.14 \: * \: 10$

• $\boxed{\sf 62.8 cm.}$

$\huge{\bf{\red{\mathfrak{Conclusion:-}}}}$

• $\boxed{\therefore{\sf Length \: of \: tape \: required \: = \: 62.8 \: cm.}}$

$\huge{\bf{\purple{\mathfrak{Important \: note:-}}}}$

• We need to be really careful while answering these type of questions.

• It is important for us to understand geometric shapes.

• According to the question,

• When we see the word "pipe" we assume that it is in the form of a cylinder.

• We may get confused and use the formula for CSA of a cylinder but 'h' which is height is not given.

• It is clearly mentioned that the pipe is circular.

• So, we need to use the formula of circumference of a circle and not concern about cylinder.

Answer 2

✫ Correct Question :

• ➼ The radius of a circular pipe is 10 cm. What is the length of tape required to wrap around the pipe? (π = 3.14)

✫ Required Solution :

✰ Values given to us :

• ➼ Radius of pipe = 10cm

• ➼ For calculating tape required to cover pipe we have to find circumference of pipe

✰ Circumference of circle = 2πr

✫ Putting value given :

• ➼ 2 × 3.14 × 10

• ➼ 62.8 cm

✫ Finally :

➼ ✰ we require 62.8 cm tape ✰

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