Question
If angle between two sides of 3 cm & 2 cm of a triangle
is 30°. what is the area of the triangle ?Solution
Area of the triangle = 1/2 X a X b X Sin θ  where ɵ is the angle between two sided a & b of the triangle; So Area of the triangle  = 1/2 X a X b X Sin θ   = 1/2 X a X b X sin 300 = 1/2 X 3 X 2 X 1/2 = 3/2 cm2
A train whose speed is 40 m/s crosses a bridge in 20 seconds. Another train which is 80m shorter than the first train crosses the same bridge at the spe...
Compare the rates of two trains, one travelling at 40 km an hour and the other at 30 m a second? Â
X started to run from point ‘A’ to ‘B’ at a speed of 25 km/hr at 9:00 am and Y started to run from point ‘B’ to ‘A’ at a speed of 15 km/...
- Sita takes 6 hours to walk from village 'D' to village 'E' at a speed of 5 km/h. Then she increases her speed by 60% and takes 2 hours to reach village 'F'...
A wheel has a diameter of 28 meters and rotates at a speed of 25 revolutions per minute. How much distance will the wheel travel in 32 minutes?
Average speed of ‘A’ during a 24-hour journey is 32 km/h. If he covered the first 160 km of his journey at a speed of 20 km/h, then find the speed a...
A woman must travel 500 km in 10 hours. If she traveled the first 30% of the journey at a constant speed of 50 km/h, at what speed must she travel the r...
Two cars X and Y start from two places A and B respectively which are 800 km apart at 8 a.m. Both the cars run at an average speed of 50 km/hr towards e...
A person starts jogging from park gate 'A' at 6:30 AM at a speed of 8 km/h. Another person starts from the same gate at 8:00 AM, jogging in the same dir...
Ajay and Vishal left the place ‘X’ with different speeds which are in the ratio 5:3 respectively. Ajay left the place 36 seconds after Vishal. If af...