Saved Bookmarks
| 1. |
Find the area of the sector of a circle with radius4 cm and of angle 30º. Also, find the area of thecorresponding major sector. (Use t = 22/7). {46.05 cm? |
|
Answer» Answer: AR. of sector = 0.942 cm^2 Ar. of major sector = 11.304 cm^2 Explanation: Ar. of sector = THETA/360° × pi × r^2 = 30°/360° × 22/7 × 4 × 4 = 1/12 × 22/7 × 16 = 1/3 × 11/7 × 2 = 0.3 × 1.57 × 2 = 0.942 cm^2 Ar. of major sector = 360° - theta / 360° × pi × r^2 = 360° - 30° / 360° × 22/7 × 4 × 4 = 330°/360° × 11/7 × 2 × 4 = 11/12 × 11/7 × 2 × 4 = 11/3 × 11/7 × 2 = 3.6 × 1.57 × 2 = 11.304 cm^2 Hope it HELPS u !!!!!!!!!! |
|