I will now explain the fastest way to solve this. First off, the ratio is 2:3 so the first thing I do is combine that for 5, then do 30/5 for an answer of 6. Then, I multiply 6 for the ratio, which comes out as 12:18, 12 boys and 18 girls. 18-12=6, so there are 6 more girls than boys in the class.
In order to calculate the volume of this prism, we need to find the width, the length and the height. According to this figure, the length is 9. the width is 3 and the height is 7. Then the volume is
