Saved Bookmarks
| 1. |
The radius of a circle is 7cms. The angle subtended by an arc of the circle at centre is 45°. Find the area of sector. |
|
Answer» Given:Area of MINOR sector, A=77 CM 2 ANGLE subtended by sector, θ=45 o To find: Radius rArea of minor sector SUBTENDING angle of θ o at center of a CIRCLE of radius r is given by A= 360θ ×πr 2 Substituting values, we get:77= 36045 ×πr 2 r≈ 45×22/777×360 ∵π≈22/7r=14 cm |
|