Quantitative Aptitude - Arithmetic Ability Questions

What is the circumference (in cm) of a circle whose area is 616 sq cm?

What is the equation of the line perpendicular to the line 2x + 3y= -6 and having Y-intercept 3?

In which of the following quadrilaterals opposite angles are supplementary?

What is the curved surface area (in cm²) of a hemisphere of diameter 42 cm?

The circumference of a circle is equal to the perimeter of an equilateral Δ. If the radius of the circle is 14 cm what is the length of the side of the equilateral Δ?

Two smaller circles touch a large circle internally and pass through the center O of the larger circle. If the diameter of the bigger circle is 28 cm, thenwhat is the area of the bigger circle which is not enclosed by the two smaller circles (in sq.cm)?

How many three digit whole numbers are there between 75 and 405?

In the following question, select the odd letter/letters from the given alternatives.