If an equilateral triangle is inscribed in a circle of area 48 π square units, then the perimeter of the triangle is:

Inside a square PQRS, ΔQTR is an equilateral triangle. If RT and QS intersect at O, then ∠QOR is equal to-

Ranbir bought a car at a 50% discount on the cost price of the car. Had he got a 60% discount, he would have spent 1,00,000 less. Calculate the cost price of the car?

Three science classes A, B and C take a Science test. The average score of class A is 83. The average score of class B is 76. The average score of class C is 85. The average score of class A and B is 79 and average score of class B and C is 81. Then the average score of classes A, B and C is

A store sells a watch for a profit of 25% of the cost. Then the percentage of profit against selling price is-

There are some boys and girls in a room. The square of the number of the girls is less than the square of the number of boys by 28. If there were two more girls, the number of boys would have been the same as that of the girls. The total number of the boys and girls in the room are

If sin3θ=cos(20° - θ) then find out  the value of θ.