Grades 9-10 Video Solutions 2022-2022_9-10

Video Transcription

Video Summary

The problem involves three large circles and four small circles, all centered on a straight line, with equal radii within each size group. Each large circle, containing two small circles, has a radius of two, while each small circle has a radius of one. To find the shaded area, calculate the area of one large circle and subtract the areas of two small circles from it. Using the circle area formula, \( \pi r^2 \), for a large circle (radius 2), the area is \( 4\pi \). Subtracting two small circles (\( 2\pi \)) yields a shaded area of \( 2\pi \).

Keywords

circle geometry

shaded area

circle radius

area calculation

mathematics problem