If ^@ \alpha ^@ and ^@ \beta ^@ are the zeros of polynomial ^@ x^2-x-12,^@ find a polynomial whose zeros are ^@ \dfrac{ \alpha^2 }{ \beta^2 } ^@ and ^@ \dfrac{ \beta^2 }{ \alpha^2 }. ^@
A vertical stick which is ^@ 24 \space cm^@ long casts a ^@15 \space cm^@ long shadow on the ground. At the same time, a vertical tower casts a ^@50 \space m^@ long shadow on the ground. Find the height of the tower.
A circle is inscribed in a ^@ \triangle ABC ^@, touching ^@ BC, CA, ^@ and ^@ AB ^@ at points ^@ P, Q, ^@ and ^@ R ^@ respectively. If ^@ AB = 12 \space cm, AQ = 9 \space cm ^@ and ^@ CQ = 7 \space cm ^@ then find the length of ^@ BC ^@.
A decorative block shown in the figure is made of two solids_a cube and a hemisphere. The base of the block is the cube with edge of 3.3 cm and the hemisphere attached on the top has a diameter of 2.3 cm. If the block to be painted, then the total area to be painted is: