If the measure of the interior angle of a regular polygon is 100 deg greater than the measure of its exterior angle then how many sides does it have?

The length and breadth of a rectangle are 21 cm and 20 cm respectively. Find its area (in cm2).

The line graph shows the average hours per day spent by teenagers playing outdoor games. Study the diagram and answer the following questions.

The line graph shows the average hours per day spent by teenagers playing outdoor games. Study the diagram and answer the following questions.

The number of hours per day spent in playing outdoor games is ___________ more by 17 year olds as compared to 14 year olds

The line graph shows the average hours per day spent by teenagers playing outdoor games. Study the diagram and answer the following questions.

What is the ratio of hours per day spent in playing outdoor games by 13 year olds and 18 year olds?

Two trains start moving from stations S and R. Both trains move towards each other at speeds of 35 km/hr and 42 km/hr respectively. When they meet each other, the second train has travelled 90 km more than the first. What is the distance (in km) between S and R?

Vijay can do a work in 8 hours. Vijay and Puneet together can do the same work in 6 hours. Puneet and Sachin together can do the same work in 4 hours. Sachin alone can complete the same work in how many hours?

If the value of √30  is approximately 5.477, then what is the approximate value of 56 ?