Question
1350 metres long train crosses a man who is moving in
the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 25 seconds with the same speed, then find the speed of the man.Solution
Let the speed of the man be ‘x’ m/sec. Speed of train = 1350/25 = 54 m/sec Relative speed of the train = (54 – x) m/sec According to the question, => (54 – x) = 1350/30 => x = 54 – 45 => x = 9 Therefore the speed of the man = 9 m/sec
- The circumference of the circle is 88 cm while the length of the rectangle is 5 cm more than the radius of the circle. Find the perimeter of the rectangle ...
A sector of a circle has a central angle of 120° and a radius of 10 cm. Find the area of the sector.
- The circumference of the circle is 154 cm while the length of the rectangle is 15 cm more than the radius of the circle. Find the perimeter of the rectangl...
If a wheel covers a distance of 2200 cm in 7 rotations, then the diameter of the wheel is?
- Find the area of a circle whose radius is (3/4)ᵗʰ of the side of a square whose area is 1,600 cm². (Use π = 3.14)
If a wheel covers a distance of 660 m in 30 rotations, then the diameter of the wheel is?
In a circle, the length of a chord is 20 cm, and the perpendicular from the center to the chord divides it into two equal parts. If the distance from th...
- What is the area of a circle whose radius is equal to the length of a cube’s edge, if the cube's total surface area is 1,944 cm²? (Take π = 3)
A square PQRS is inscribed inside a circle. Another circle is inscribed within the square PQRS, and this process repeats infinite...
The circumference of the circle is 198 cm while the length of the rectangle is 12 cm more than the radius of the circle. Find the perimeter of the recta...
Relevant for Exams:
