exam Maths Puzzle Numerical Ability

The volume of a cylinder (think about the volume of a can) is given by V = πr2h where r is the radius of the cylinder and h is the height of the cylinder. Suppose the volu

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exam Other Question

Given the two points (4,6) and (8,18) write the point-slope form of the line through the two points and write the equation in slope-intercept form. A ball is thrown upward from the roof of a building 100 m tall with an initial velocity of 20 m/s.

When will the ball reach a height of 80m?

I would appreciate help with this one. Thank you!