If each tile is 30x60 in centimeters, finding the area of one tile will give you 1800 cm^2 per tile. With 37 tiles, you could have to multiply 1800 by 37, giving you 66,600 cm^2.
Since you require the answer to be in square meters, we need to use the following conversion with the values that we already have: 1 cm^2 = 0.0001 m^2. Now we have an equation we can use to determine the exact value of square meters required.
Multiply both sides of the equation with the amount of cm^2 you have:
(66,600)(1 cm^2) = (66,600)(0.0001 m^2)
66,600 cm^2 = 6.66 m^2.
You will be needing 6 and two-thirds square meters to fill 37 pieces of 30x60 cm tiles.