Question

5. The radius of a circular pipe is 5 cm. What length of tape is required to wrap twice around the pipe?
(Take - 3.14)​

Answer 1

Answer:

the required length of tape is 62.8 cm

Answer 2

$\huge \sf\underline \red{Answer : }$

$\sf \underline{62.8cm}$

$\sf \huge \underline \pink{solution : }$

$\sf \pink \:Given = \begin{cases} & \textsf{Radius \: of \: circular \: pipe \: is \: 5cm} \\ & \textsf{ \: To \: find \: length \: of \: tape \: is \: required \: twice}\end{cases}$

$\sf \underline{so \: we \: know \: that \: circumference \: formula}$

$\: \: \: \: \: \: \: \: \: \: \sf{ \boxed{ \underline{ \underline{ \red{ \tt{circumference = 2\pi \: r \: }}}}}}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \star \: {\pi \: is \: 3.4}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \star \: {r\: is \: 5 \: cm}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies{2 \times 3.4 \times 5}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies{10 \times 3.14}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies{31.4cm}$

According to Question, the tape is wrapped twice so,

$\sf{\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies{2 \times 31.4}}$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \implies{62.8cm}$

$\sf \underline{ \therefore \: length \: of \: tape \: required \: is \: 62.8}$