Grades 7-8 Video Solutions 2021-video 2021 7-8/25

Video Transcription

Question 25. A soccer ball is made of white hexagons and black pentagons as seen in the picture. There are a total of 12 pentagons. How many hexagons are there?  If we take a closer look at the ball, we can count up. After 12 pentagons, each pentagon has five sides. So if we multiply 12 by 5, we get a total of 60.  However, before we can conclude that there are 60 hexagons, we can count out that there are 3 pentagons per hexagon, which means that we have to divide our  total of 60 by 3. Once we do that, we get our answer, which will be D, 20.

Video Summary

Question 25. A soccer ball is made of white hexagons and black pentagons as seen in the picture. There are a total of 12 pentagons. How many hexagons are there? If we take a closer look at the ball, we can count up. After 12 pentagons, each pentagon has five sides. So if we multiply 12 by 5, we get a total of 60. However, before we can conclude that there are 60 hexagons, we can count out that there are 3 pentagons per hexagon, which means that we have to divide our total of 60 by 3. Once we do that, we get our answer, which will be D, 20.

Keywords

soccer ball

hexagons

pentagons

geometry

calculation