a. Express one light year `=9,460,000,000,000 km` in the standard form.
b. The area of the USA is `9,834,000` square kilometres and the area of India is `3,287,000` square kilometres. Write the two areas in the standard form and compare them.

The population of India is 1,300,000,000 and that of Russia is 140,000,000 . Write the population of both the countries in standard form and compare them.

The population of India is 1,300,000,000 and that of the USA is 320,000,000 . Write the population of both the countries in standard form and compare them.

When we express the velocity of light 30,00,00,000 in standard form up to three significant fogures it is

Express the following numbers in the standard form: (i) 3908. 78 (ii) 5,00,00,000

Express the numbers appearing in the following statements in the standard form: The distance between the earth and the moon is 384,000,000 metres. Diameter of the earth is 1, 27 , 56 , 000 metres. Diameter of the sun is 1,400,000,000 metres. The universe is estimated to be about 12,000,000,000 years old.

Express the following numbers in the standard form: (i) 5985.3 (ii) 65,950 (iii) 3,430,000 (iv) 70,040,000,000

A city building code requires that the area of the windows must be at least (1)/(8) of the area of the walls and roots of all new building. The daily heating cost of a new building is ₹ 3 per square meter of window area and ₹ 1 per square metre of wall and roof area. To the nearest square metre of wall and roof area. To the nearest square metre, what is the largest surface area a new building can have if its daily heating cost cannot exceed ₹ 1,000 ?

Express the numbers appearing in the following statements in standard form. a) speed of light in vacuum is 3,00,000,000 m/s

Express the number appearing in the following statements in standard form.(a) The distance between Earth and Moon is 384,000,000 m.(b) Speed of light in vacuum is 300,000,000 m/s.(c) Diameter of the Earth is 1,27,56,000 m.(d) Diameter of the Sun is 1,400,000,000 m.(e) In a galaxy there are on an average 100,000,000,000 stars.(f) The universe is estimated to be about 12,000,000,000 years old.(g) The distance of the Sun from the centre of the Milky Way Galaxy is estimated to be 300,000,000,000,000,000,000 m.(h) 60,230,000,000,000,000,000,000 molecules are contained in a drop of water weighing 1.8 gm.(i) The earth has 1,353,000,000 cubic km of sea water.(j) The population of India was about 1,027,000,000 in March, 2001.

Express the following numbers in the standard form: 3,18,65,00,000 (ii) 846xx10^7 (iii) 723xx10^9