$$ secA(secA+tanA)(1-sinA)\over (cosec^2A-1)sin^2A$$ is equal to:

The area of the base of a right circular cone is 81 cm² and its height is 12 cm. What is the curved surface area (in cm2) of the cone?

Direction: Study the following information to answer the questions.

In hotel A, what is the difference between the total number of male customers on Monday and Tuesday together and that on Wednesday and Thursday together?

The diameter of the circle with center O is AB. PQ is the chord that does not intersect AB. Join AP and BQ. If ∠BAP = ∠ABQ,  then what will be ABQP?

The smallest number, which when added to 680621 gives the sum a perfect square number, will be

Directions: Answer the questions based on the information given below:
The following line graph shows revenue and expenditure of company A for 5 years (in Lakhs):

What is the average expenditure of the company A over the years?

A bullet travels at 750 m/s. How long will it take to travel 1 km?

Piyush formed a larger cube from the material obtained by melting three smaller cubes of 3, 4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?