Which is the shorter path from A to B, round the 2 smaller semi-circles or around the large semi-circle

The path length is the same for the small and large semicircles.

Step-by-step explanation:

The distance around the large semicircle = 1/2 * π * diameter

=  1/2*8*π

= 4π m.

The distance around the 2 smaller semicircles

= 1/2 * 4 * π + 1/2 * 4 * π

=  2π + 2π

= 4π m.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

hope this is what you were asking for!

step-by-step explanation: