For the following questions answer them individually
If the radius and height of the cylinder are 91 m and 2.5 m, respectively, then what is the curved surface area and total surface area of the cylinder in respective manner?
(Use $$\pi = \frac{22}{7}$$)
If a number 'a' is divisible by 18 and another number 'b' is divisible by 12, then $$(a^{2} - b^{2})$$ is divisible by :
A dealer marks an air-conditioner for ₹1,20,000 and allows a discount of 12% on it.
What is its selling price (in ₹)?
Find the ratio of the total surface area to curved surface area of a cylinder whose radius is 20 cm and height 50 cm.
By what percentage should a car driver increase the speed of the car to reduce the time by 40% to cover a fixed distance?
A number is increased by 8% and then, the increased number is decreased by 8%.
What is the net increase or decrease in the number?
Three years ago, Rahul borrowed a sum of money at compound interest rate of 10% per annum compounding annually. If the present value of that borrowed money is Rs.11,979, how much money was borrowed by Rahul?
A is thrice as good a workman as B. A started the work and they worked together on alternate days and finished the work in 24 days. The number of days taken by A alone to finish the work was:
Ram wants to paint all the walls and ceiling of his reading room personally. He started painting his room and after painting the area of 16 $$m^{2}$$, a paint tin of 4 litres is exhausted. How many paint tins are required to paint the remaining area, if the total area of his room to be painted is 176 $$m^{2}$$?
If A, B and C work individually, then they can finish a piece of work in 27, 36 and 45 days respectively. How many days are required to complete the task if they work together?