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a) r = 29 cm, b) Angle AOC = 1.39 rad, c) Shaded Region= 68 cm sq, d) Perimeter = 87.7 cm a) r = 130 cm, b) Angle AOC = 12.9 rad, c) Shaded Region= 675 cm sq, d) Perimeter = 867 cm a) r = 30 cm, b) Angle AOC = 1.29 rad, c) Shaded Region= 67.5 cm sq, d) Perimeter = 86.7 cm ABC is the segment of a circle, centre O, radius r. This segment is enclosed in a rectangle APQC. Given that AC = 36 cm and AP = 6 cm, Find a) r b) the angle AOC is radian c) the area of the shaded region d) the perimeter of the shaded region The diagram shows two sectors in which AB, CD are arcs of concentric circles, centre O. The arcs AB and CD have lengths 10.8 cm and 15.6 cm respectively. If AD = 4 cm, calculate a) OA = 8 cm, b) Angle AOB = 2.1 radian, c) Shaded Area = 51.8 cm sq a) OA = 9 cm, b) Angle AOB = 1.2 radian, c) Shaded Area = 52.8 cm sq a) OA = 9 cm, b) Angle AOB = 1.2 radian, c) Shaded Area = 58.2 cm sq a) Angle AOB = 1.2 rad a) Angle AOB = 0.8 rad a) Angle AOB = 0.833 rad The diagram shows part of a circle, centre O and radius 12 cm. Given that the length of the arc AB is 10 cm, calculate ABC is a sector of a circle, centre A and angle BAC = 0.524 radians. calculate, to three significant figures, a) Perimeter of shaded region a) Perimeter of shaded region a) Perimeter of shaded region |