Quantitative Aptitude - Arithmetic Ability Questions

The perimeters of a square and an equilateral triangle are equal. If the diagonal of the square is 9 cm, what is the area of the equilateral triangle?

A triangle has a perimeter of 200. If two of its sides are equal and the third side is 20 more than the equal sides, what is the length of the third side?

If √(1 - cos2A) = x, then the value of x is

3 numbers whose average is 112, the first number is 1/6th the sum of other 2. What is the first number?

Mahesh buys 3 shirts at an average price of Rs 1250. If he buys 2 more shirts at an average price of Rs 1450 what will be the average price (in Rs) of all the 5 shirts he buys?

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

The length of a side of an equilateral triangle is 8 cm. The area of the region lying between the circum circle and the incircle of the triangle is (use: π = 22/7)