9. The ratio of the total surface area and the lateral surface area of a right cone is 3 : 2 and its height is
om. Find the volume of the cone.
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a train travels at a certain avg speed, for a distance of 63 km, and then travels a distance of 72km, at an avg speed of 6 km/hr, more than its original speed.. if it takes 3 hrs, to complete, the total journey, what is the original ag speed?a plane left 30 mins late, than its scheduled time, and in order to reach the destination 1500 km, away, in time, it had to increase the speed by 100 km/hr, from usual speed.. find its usual speed..
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