question_answer

A table cover \[75%\] is spread on a meeting table is .25 m of the cover hanging all around the table. The cost of polishing the table top at Rs.2.25 per square metre is:

A) Rs. 8.89                      

B) Rs. 11.81

C) Rs. 8.59                      

D) none of these

Correct Answer: B

Solution :

Area of table top \[6\frac{2}{3}cm\] \[27\pi c{{m}^{3}}\]\[30\pi c{{m}^{3}}\] Cost of polishing on \[108\pi c{{m}^{2}}\]