神马作文网用英文描述三道数学题,每道不少于四句话
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用英文描述三道数学题,每道不少于四句话
1.A tank with full water has a inverted circular cone with base of radius 5 m and H of 10 m . If the tank has a hole and is leaking and the water level is decreasing at the rate of 3 m/min –estimate the rate at which the tank is losing water when the water level is only 5 m deep.2.As in right figure,in a quadrilateral ABCD,we have its diagonal AC bisects DAB,and AB=21,AD=9,BC=DC=10,then the distance from point C to line AB is ,and the length of AC is . (英汉词典：quadrilateral 四边形；bisect 平分)3.There is a road between site A and site B. Jia walks from A to B .Yi keeps commuting from A to B by motorbike without stop.If Jia and Yi both start from A at the same time ,they meet for the first time after thirteen minutes , then Yi overtakes Jia for the first time after five minutes. When Jia gets to side B ,how many time do they meet each other on there journey? 
The picture in Q2.
The picture in Q2.