The following table gives the monthly expenditure of two families: In constructing a pie diagram to the above data, the radii of the circles are to be chosen by which one of the following ratios?

Step-by-step solution

Total expenditure of A =3,500+500+1,500+2,000+ 2,500 =10,000 Total expenditure of B =2,700+800+1,000+1,800+ 1,800 aligned & =8,100 & Area of A: Area of B=10,000: 8,100 & =100: 81 & radius of A: radius of B= 100 : 81 & =10: 9 aligned