A toy is made in the shape of the cylinder with one hemisphere stuck to one end and a cone to the other end the length of the cylindrical part of the toy is 20 cm and diameter is 10cm. if the slant height of the cone is 13cm find the surface area of the toy
in the figure AB and CD are two diameters of a circle (with centre O) perpendicular to each other and OD is the diameter of the smaller circle. If OA is equal to 7cm, find the area of the shaded region
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