Quantitative Aptitude - Arithmetic Ability Questions

What is the simplified value of (cosec A + sin A)(cosec A – sin A)?

A chord of length 60 cm is at a distance of 16 cm from the centre of a circle. What is the radius (in cm) of the circle?

Three angles of a quadrilateral are 60°,90°and 100°. Then the fourth angle of the quadrilateral is

A right circular conical structure stands on a circular base of 21m diameter and is 14m in height. The total cost of colour washing for its curved surface at Rs. 6 per sq. m. is
(Take Π = 22/7 )

Determine the largest 4 digit number which is a perfect square.

The average marks of 10 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 34 instead of 43. What is the correct average?

The value of √0.0144 is

If the line DE is drawn parallel to the base BC of a triangle ABC by intersecting the other two sides, then which of the following is the CORRECT equation for this case.