The pie chart shows the results of an online survey which asked people about their favourite travel destination. Study the diagram and answer the following questions.
What is the total number of people who have responded to the survey?
The ratio of total surface area and volume of a sphere is 1 : 7. This sphere is melted to form small spheres of equal size. The radius of each small sphere is 1/6th the radius of the large sphere. What is the sum (in cm2) of curved surface areas of all small spheres?