Saved Bookmarks
| 1. |
Find the area of circular ring whose external and attitude diameter are 20 cm and 6 CM |
|
Answer» AREA of circular ring = 286 sq cm Step-by-step explanation: area of square = π * r ki POWER 2 EXTERNAL diameter = 20 cm r1 = 10 cm internal diameter = 6 cm so r2 = 3 cm area of circular ring = area of external diameter - area of attitude = π * 10 * 10 - π * 3*3 = π(100-9) =91 π sq cm or 22/7 * 91 = 286 sq cm
|
|