Question 509246
i have a pie chart that i need to complete. However, it is all in percentages and i need to covert those percentages in to numbers to work out the total number and draw the pie chart. 
<pre>
Water usage            percentage      decimal×360°  = central angle 

laundry                   20%             .20×360°   =    72° 
Toilet flushing           30%             .30×360°   =   108°
Kitchen and drinking      10%             .10×360°   =    36°
Shower and bath           35%             .35×360°   =   126°    
Cleaning                   5%             .05×360°   =    18°
------------------------------------------------------------------
                         100%                            360°

Be sure to measure those central angles with a protractor.  

{{{drawing(400,400,-1.5,1.5,-1.5,1.5,

circle(0,0,1), 

line(0,0,cos(18*pi/180),sin(18*pi/180)),

line(0,1,0,-1), line(0,0,cos(234*pi/180),sin(234*pi/180)),

line(0,0,cos(108*pi/180),sin(108*pi/180)),

locate(.1,.5,"Laundry_20%"), locate(.1,-.2,Toilet), locate(.1,-.4,"Flushing_30%"), locate(-.3,-.4,"K&D"), locate(-.3,-.6,"10%"),
locate(-.7,.3,Shower),locate(-.7,.2,"&_Bath_35%"),
locate(-.2,.9,"Cl."),locate(-.2,.8,"5%")


)}}}

Edwin</pre>