Two tankers contain 371 litres and 189 litres of petrol respectively. A container with maximum capacity is used which can measure the petrol of either tanker in exact number of litres. How many containers of petrol are there in the first tanker.
A decorative block shown in the figure is made of two solids_a cube and a hemisphere. The base of the block is the cube with edge of 4.6 cm and the hemisphere attached on the top has a diameter of 3.8 cm. If the block to be painted, then the total area to be painted is: