What is total surface area of a cone where, r’ is radius and ‘l’ is slant height?   

A rectangular grass plot 80 m × 60 m has two roads, each 10 m wide, running in the middle of it; one parallel to length and the other parallel to breadth. Find the cost of gravelling the roads at ₹ 2 per m². 

P is 20 percent more than Q and Q is 30 percent less than R. If P is 420, then What is the value of R?

If 28 men complete the $$ {7\over 8}$$ portion of a work in a week, then how many man will have to work to complete the remaining work in one finish.

Aparna changes the marked price of an item to 50% above its C.P. What % of discount allowed in approximately to gain 10%?

If $$ x={\sqrt3\over{2}}$$ then the value of $$ \sqrt{1+x}-\sqrt{1-x}$$ will be

Products pass successively through the hands of three traders and each of them sells his goods at a profit of 30% of his cost price. If the last trader sold the products for Rs.300, then how much did the first trader pay for them? 

Directions : A graph showing the price of rice in India during the year 2000 to 2003 is given below. Study the graph carefully and answer the questions.

The month in which the price of rice were equal for the year 2000 and 2001 was