What is the value of (2 + tan600) ?

Find the surface area (in cm2) of a sphere of diameter 28 cm.

Calculate the area (in cm2) of a circle whose diameter is 7 cm.

The perimeter and the breadth of a rectangle are 46 cm and 8 cm respectively. Calculate the length of its diagonal (in cm).

What is the square root of 9409?

The distance between two cities X and Y is 270 km. First train starts from X at 7:00 a.m. and travels towards Y at 40 km/hr. Second train starts from Y at 8:30 a.m. and travels towards X at 30 km/hr. At what time (in a.m.) will both the trains meet?

P, Q and R alone can complete a work in 12, 15 and 20 days respectively. In how many days will they together complete the same work?

If 3=1.732, then what is the value of (3 - 103 + 27) ?