Each cone of the hourglass has a height of 15 millimeters. The total height of the sand within the top portion of the hourglass is 45 millimeters. The radius of both cylinder and cone is 6 millimeters. Sand drips from the top of the hourglass to the bottom at a rate of 10π cubic millimeters per second. How many seconds will it take until all of the sand has dripped to the bottom of the hourglass?

Question

anonymous · Answer

so the sand in the top portion has a height of 45mm in a 15mm cone?

anonymous · Answer

yeshh.

anonymous · Answer

isnt that odd?

shayaan_mustafa · Answer

this question is wrong. someone also posted that and with same error.