Quantitative Aptitude - Arithmetic Ability Questions

What is the value of 1.23+0.83+0.73-2.0161.351.22+0.82+0.72-0.96-0.84-0.56 =

Find the area (in cm²) of a semi-circle of radius 35 cm.

If the perimeter of a semicircle is 108 cm, then find its area (in cm²).

If cosAcotA/(1 -­ sinA) = x, then the value of x is

Δ ABC is right angled at B. If m∠A = 60°, then what is the value of sec C.sin A?

A boat covers 143 km upstream in 13 hours and the same distance downstream in 11 hours. What is the speed (in km/hr) of the boat in still water?

In how many years will Rs 25,000 yield Rs 8,275 as compound interest at 10% per annum compounded annually?

P and Q can do a project in 20 and 12 days respectively. In how many days can they complete 40% of the project if they work together?