1. Circle or 2 2. Semi- circle + 2r ½ 2 3. Ring (Shaded 2 + R) (R2-r2) region) 4. Sector of a circle or l+2r= - sin 5. Segment of a +2r Sin circle 2 A B l Area of major segment= Area of a circle – Area of minor segment Distance moved by a wheel in 1 rotation=circumference of the wheel Number of rotation in 1 minute =Distance moved in 1 minute / circumference LEVEL-I If the perimeter of a circle is equal to that of square, then the ratio of their areas is 22/7 14/11 7/22 11/14 [Ans-ii]
1. 2. 3. 4. 5. Circle Semi- circle Ring (Shaded region) Sector of a circle Segment of a circle or + 2r 2 + R) l+2r= +2r Sin 2 ½ 2 (R2-r2) or - sin 2 A B l Area of major segment= Area of a circle – Area of minor segment Distance moved by a wheel in 1 rotation=circumference of the wheel Number of rotation in 1 minute =Distance moved in 1 minute / circumference LEVEL-I If the perimeter of a circle is equal to that of square, then the ratio of their areas is 22/7 14/11 7/22 11/14 [Ans-ii]
1288508582final_study_material_maths_class_x_2012-2013.docx