in the figure one given below abc is an equilateral triangle with each side of length 10 in abcd angle b = 90° and cd = 6 cm find the area of the shaded region liver answer correct to one decimal places
A train travels at a certain average speed for a distance of 54 km and the travels a distance of 63 km at an average speed of 6 km/hr more than the first speed.If it takes 3 hours to complete the journey, what was its first average speed