Grades 11-12 Video Solutions 2025-2025_11-12

Video Transcription

Video Summary

Grandma started with a ball of yarn with a diameter of 30 cm and, after knitting 70 socks, she was left with a smaller ball with a diameter of 15 cm. Since the number of socks is proportional to the volume of the yarn, and assuming a spherical shape, initially the yarn volume was eight times that of the remaining yarn. Seven-eighths of the initial volume was used for the first 70 socks, leaving one-eighth of the volume, sufficient to knit 10 additional socks. Therefore, Grandma can knit 10 more socks, corresponding to option E.

Keywords

knitting

yarn volume

socks

spherical shape

proportional