Page 1 : is equal”, , , , , , , , , , , , , , , , , , , , , , RELATED TO CIRCLES, READ, , 13,71, , rea of a sector of a circle ig —, 5, Ifthe area 0 1 8 of the area of the circle, , a e circle, the: 2 sector a i, a , then the sector angle is, , (a) 60° (b) 90° (c) 100°, , (d) 120°, Ifthe area of a sector of a circle is a of th, 46. 20 € area of the circle, then the, equal to, , fa) 10" eae (c) 100° (d) 1268, y, In Fig. 13.119, if ABC is an equilateral triangle, then shaded area is equal to, , Ja (b) (Ee ©) aa. ( (E+.8)7, , A, , sector angle is, , , , , , , , B Cc, B P—3 cm+-A, Fig. 13.119 Fig. 13.120, 38, In Fig. 13,120, the area of the shaded region is, (a) 3cm? (b) 6xcm? (c) 9nem? (a) 7x cm?, 39,, , If the perimeter of a circle is equal to that of a square, then the ratio of their areas is, (a) 13: 22 (b) 14: 11 (c) 22: 13 (d) 11: 14, | The radius of a circle is 20 cm. It is divided into four parts of equal area by drawing, , three concentric circles inside it. Then, the radius of the largest of three concentric, circles drawn is, , @) 10V5om — (b) 10V8em —() 10am A) 102 crn, , » The area of a sector whose perimeter js four times its radius r units, is, 2, > r S, r ; 2 sq. uni d) = sq. units, (a) 7s units (b) 2r? sq. units (¢) 7 Sq. ts (d) a, , . Ifa chord of a circle of radius 28 cm makes an angle of 90° at the centre, then the area, Of the major segment is 2, @) 392cm2 (b) 1456cm? ——(€) 1848 em {, , If area of a circle inscribed in an equilateral Cane at, Perimeter of the triangle is if, @) 1748 uni 36 units Oyen :, , V3 units (b) jg, The area swept by it betwee!, , (@) 2240 cm?, , square units, then, , (a) 48V8 units, , n 11.20 am and, , ; te hour hand of a clock is 6 cm lon} :, 55 am i 2 d) 10 cm, , (2) 275 cm? (by 5:6 em? Coe ., , @@e0o, , SHOT ON POCO X3