The percentage of world population of countries is given in the following table. Find the value of $a$ . If a pie diagram has to be drawn, what would be the measure of the central angle from USA?
Country India China Russia USA Others Total
% of population $15$ $20$ $a$ $a$ $25$ $100$

Open in App

Solution

The % population of USA = total % population - rest. => 15+20+a+a+25=100; 60+2a=100; a=20; For central angle of USA= (20/100)*360 = 72 degrees

Suggest Corrections

Similar questions

Country	India	China	Russia	USA	Other	Total
Percentage of population	15	20	a	a	25	100

Look at another picture. It compares the population of the five most populous countries of the world.

(i) Which is the most populous country in the world?

(ii) Where does India stand in terms of population?

(iii) What is the position of the USA?

(iv) Roughly what percent of the world population is the combined population of India and China?

(v) Roughly, how many times the population of USA is the population of India?

Join BYJU'S Learning Program