To find the volume of a 3D shape (in question, the suitcase) we use the formula length x width x height. With this in mind, we multiply 19 x 7 = 133. Multiply 133 by 1.5, which equals 199.5. With a final answer of 199.5, the volume of the suitcase will be 199.5 .
Well first do 20 children minus 8 girls to find how many boys there are: 20-8=16 So there are 16 boys. Therefore we can write the ratio of girls to boys as: 8/16 Then we can simplify this ratio by dividing it by 8 to get: 1/2 So the answer is the ratio of girls to boys in the group in simplest form is 1/2.