exam Maths Puzzle Numerical Ability

The cylinder diameter is 19 depth 1.6 at the rate of 14m3 per hr.
How many hrs. will it take to empty the pool? Thanks

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exam Other Question

I need help with writing equations of the line with the given slope and y intercept this is my problem slope-3/4,y intercept (0,8) 4y squared -12y+9