Saved Bookmarks
| 1. |
Please answer me with solutiondont apam |
|
Answer» -step explanation:d) radius of outer circle=3.5cm AREA of outer circle=pi×r² =22/7×3.5×3.5 =38.5cm² radius of INNER circle=2.1cm area of inner circle=pi×r² =22/7×2.1×2.1 =13.86cm² area of shaded region=area of outer circle - area of inner circle=38.5-13.86=24.64cm² e)area of the RECTANGLE=l×b =20×14 =280cm² radius of the SEMICIRCLE=14/2(because 14 is the diameter) =7CM area of semicircle=pi×r²/2 =22/7×7×7/2 =77cm² area of shaded region=area of rectangle+area of semicircle =77+280357cm²f) diagonal of rectangle=diameter of circle diagonal of rectangle=root of 21²+28² =root of 441+784 =root of 1225 =35cm diameter of circle=35cm radius of circle=35/2 =17.5cm area of circle=pi×r² =22/7×17.5×17.5 =962.5cm² area of rectangle=21×28 =588cm² area of shaded region=area of circle - area of rectangle =962.5-588 =374.5cm² |
|