Question

surface area of composite figures

Answer 1

will give a medal

Answer 2

disc area = 2*pi*r =2*3.14*3
you have 2 ends
total discs = 2*(2*3.14*3)=24 pi=24*3.14

Answer 3

= 2*pi*r*h
h=8*3 from the plot but the hint (4 hidden circles) so h could be h=8*5 since the distance between 2 circle is 8

Answer 4

total area is the sum of these two = circles + cylinder