exam Maths Puzzle Numerical Ability

In a triangal PQR,sinP,sinQ,sinR are in Airthmatic Progreision than which option is correct . 1.Altitudes are in airthmatic Progresition
2.The Altitudes are in harmonic progresio

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exam Other Question

A piece of cardboard is 4cm longer than it is wide. From each corner a 2cm square is cut out and the cardboard is then folded to form an open box. What are the dimensions of the cardboard if the box contains 64cm ^3 ? 2(4-2r)=-2(r+5)