document.write( "Question 402141: 1)a solid rectangular block of copper 5cm by 4cm by 2cm is drawn out to make a cylindrical wire of diameter 2 mm. Calculate the length of wire.\r
\n" ); document.write( "\n" ); document.write( "2)water flows through a circular pipe of internal diameter 3cm at a speed of 10cm/s. If the pipe is full, how much water flows from one pipe in one minute ( answer in liters) \r
\n" ); document.write( "\n" ); document.write( "Show working out.
\n" ); document.write( "

Algebra.Com's Answer #284498 by mananth(16946)\"\" \"About 
You can put this solution on YOUR website!
Volume of copper = 4*5*2= 40cm^3
\n" ); document.write( "...
\n" ); document.write( "radius of wire =0.1 cm
\n" ); document.write( "..
\n" ); document.write( "Volume of wire = pi*r^2*l
\n" ); document.write( "40 = pi*0.1^2*l
\n" ); document.write( "40/(pi*0.1^2)= l
\n" ); document.write( "length = 1273 cm\r
\n" ); document.write( "\n" ); document.write( "...\r
\n" ); document.write( "\n" ); document.write( "volume of pipe = pi*r^2*l
\n" ); document.write( "V= pi*1.5^2*l0
\n" ); document.write( "70.68 cm^3 /second
\n" ); document.write( "..
\n" ); document.write( "1cm^3= 0.001 liter
\n" ); document.write( "70.68 cm^3= 0.07068 liters
\n" ); document.write( "..
\n" ); document.write( "This flow is per second
\n" ); document.write( "for 60 second it will be 60 * 0.07068
\n" ); document.write( "..
\n" ); document.write( "the flow will be 4.24 liters /minute\r
\n" ); document.write( "\n" ); document.write( "m.ananth@hotmail.ca
\n" ); document.write( "
\n" );