question_answer

The radii of the ends of a bucket 45 cm high which is of the form a frustum of a cone are, 28 cm and 7 cm. Determine the surface area.\[\left( Take\,\,\pi =\frac{22}{7} \right)\]

A)  \[11\,\sqrt{\frac{949}{4}\,}c{{m}^{2}}\]                     

B)  \[12127\,\,\frac{1}{2}\,\,c{{m}^{3}}\]

C)  \[\frac{165\,\sqrt{449+77}}{2}\,\,c{{m}^{2}}\]           

D)  \[\frac{165\,\sqrt{449-77}}{4}\,c{{m}^{2}}\]

E)  None of these