The graph shows the production of food grains of a country in different years. Study the graph and answer the questions.

The percentage increase in production from 1984 to 1985 was

The graph shows the production of food grains of a country in different years. Study the graph and answer the questions.

The difference of the production of food grains for the year 1981 and 1985 is

The graph shows the production of food grains of a country in different years. Study the graph and answer the questions.

The sum of the production of food grains in the year 1982 and 1984 is equal to that in the year:

Thousand solid metallic spheres of diameter 6 cm are melted and recast into a new solid sphere. The diameter of the new sphere (in cm) is

The angle of elevation of an aeroplane from a point on the ground is 45°. After flying for 15 seconds, the elevation changes to 30°. If the aeroplane is flying at a height of 2500 metres, then the speed of the aeroplane in km/hr. is

If cos2x + cos4x = 1, then tan2x + tan4x =

In a circle, a chord, 5√2 cm long, makes a right angle at the centre. Then the length of the radius of the circle will be

G is the centroid of ΔABC. If AG = BC, then measure of ∠BGC is