Question
A train of 175 metres is running at a speed of 72 km/h and
crosses a platform in 36 seconds. Determine the length of the platform.Solution
ATQ,
Let the length of the platform be ‘x’ metres
Speed of the train = 72 × (5/18) = 20 m/s
ATQ,
(x + 175) = 20 × 36
Or, (x + 175) = 720
Or, x = 720 - 175
Or, x = 545
Therefore, the length of the platform = 545 metres
If the circumference of a circle is 264 cm then find the area of the circle?
A right circular cone & a right circular cylinder have equal base & equal height. If the radius of the base & the height are in the ratio 8:...
A rectangular field has a perimeter of 82 meters, and the length of its diagonal measures 29 meters. Determine the area of the field.
A rectangular sheet measuring 44 cm by 38 cm has a square with a side length of 3 cm removed from each of its corners. The altered sheet is then folded ...
The sum of the radii of spheres A and B is 14 cm. the radius of A being larger than that of B. The difference between their surface areas is 112π. Wh...
The length and breadth of a rectangular field are 50 m and 30 m respectively. If the length is increased by 20% and the breadth is decreased by 10%, the...
A cylinder has a height of 14 cm and a radius of 7 cm. Find the total surface area.
- A rectangular swimming pool has a base area of 1200 m², and the volume of water in the pool is 48000 m³. Calculate the depth of the water in the pool.
In the given figure, a circle is inscribed in Δ PQR, such that it touches the sides PQ, QR and RP at points D, E, F, respectively. If the lengths of th...
If the area of square is 196 cm²  and the breadth of rectangle is 25% more and the length is 40% more than the side of the square, then find the the a...
Relevant for Exams:
