Answer:
15 cm
Step-by-step explanation:
This could help
go to you tube and paste Area of Shaded Region - Circles, Rectangles, Triangles, & Squares - Geometry
The Organic Chemistry Tutor
<u>Required area is:</u>
about 330
280 rounded is 330 and 30 is already rounded so you would add 30 plus 330
Ok the answer of 6 are 12, 18, 24, 30, 36, 42, and 48. The multiples of 9 are 18,27,36,45,54,63,72,81,90,99,108,117,126,135,144,153,162,171,180,189,198,. Hope it helps!
(180-62)
118
180-118=62
180-85=95
180-(62+95)
180-157
23
Yes he is corrct