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Start learning 50% faster. Sign in nowSpeed of train = (Length of train + Length of Platform)/Required time Length of train = 300 m Crossing time of platform = 3 × 60 = 180 sec Length of platform = 300 × 2 = 600 m Let the speed of train be x. Speed of train = (300 + 600)/180 ⇒ x = 900/180 = 5 m/s
One chord of a circle is given as 21.5 cm. Then the radius (r) of the circle must be:
If O is circumcentre of acute angled triangle ABC, if ∠ OBC = 300 then ∠BAC = ?
If G is the centroid and AD, BE, CF are three medians of ∆ABC with area 42 cm 2 , then the area of ∆BGD is?
If in a right angle triangle ABC, Angle B is a right angle. AB = 20 cm, BC= 21 cm if BD is perpendicular to AC find the length of BD?
In a rectangle PQRS, there is a point A located within the interior of the rectangle. The distances from point A to three vertices of the rectangle are ...
In an acute-angled triangle XYZ, an altitude XP is drawn from vertex X to side YZ. A point O is located on XP such that XY = 12 cm, OY = 5 cm, and OZ = ...
The length of the each side of an equilateral triangle is 10.5 cm. The area of incircle, (cm 2 ) is
If median AD of an equilateral ∆ABC is 6 cm and G is centroid. Find AG?
If I is the incentre of ΔABC , if ∠ BAC = 750 , then what is the measure of ∠ BIC?
