Whats the simplest form for 20/30

The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

What is the measure of the smallest angle in the diagram? 15 29 32 45

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48