The radii of two circles are 5cm and 12cm respectively. Find the radius of the circle having its area equal to the sum of the areas of the two circles.
A hemisphere depression is cut out from one face of a cubical wooden block of length 'l' such that the diameter of the hemisphere is equal to the edge of the cube. Choose the correct surface area of the remaining solid.
A coin is tossed 500 times and it is found that head comes up 430 times and tail 70 times. If such a coin is tossed, then what is the probability of getting a head?
Faces of a cube are marked with A,B,C,D,E and F. Two views of the cube are as shown below, if face D is opposite to face F, what will be there on the top when C is at the bottom?