Quantitative Aptitude - Arithmetic Ability Questions

There is a circular garden of radius 21 metres. A path of width 3.5 metres is constructed just outside the garden. What is the area (in metres2) of the path?

If x = 3+13, then the value of x-12642x-1x-233 is

If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?

If a - b = -6 and a2 + b2 = 44, then ab is

What is the highest common factor of 360 and 450?

If cos 21° = x/y, then cosec 21° -­ cos 69° is equal to

What is the value of tan 1° tan 2° tan 3°....... tan 89°?

If 12x = 192- 112, what is the value of x?