
The diagram shows a semicircle with diameter 9cm.
Calculate the total perimeter of this semicircle.
Give your answer in exact form.
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Exam code: 0580 & 0980
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Circles, Arcs & Sectors
The diagram shows a semicircle with diameter 9cm.
Calculate the total perimeter of this semicircle.
Give your answer in exact form.
How did you do?
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is a sector of a circle, centre
.
The radius of the circle is 15 cm.
The angle of the sector is .
Calculate the area of sector .
Give your answer as a simplified expression in terms of .
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The diagram shows a sector of a circle of radius 7 cm.
Work out the length of arc .
Give your answer as a simplified expression in terms of .
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The region, shown shaded in the diagram, is a path.
The boundary of the path is formed by two semicircles, with the same centre , and two straight lines.
The inner semicircle has a radius of 7 metres.
The path has a width of 2 metres.
Work out the perimeter of the path.
Give your answer as a simplified expression in terms of .
...................................................... m
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A circle centre has radius 9 cm.
Calculate the perimeter of the shaded sector of the circle.
Give your answer as a simplified expression in terms of .
...................................................... cm
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The diagram shows two sectors of circles with the same centre. Calculate the shaded area.
Give your answer in terms of .
............................................. cm2
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The diagram shows a sector of a circle with radius 6 cm and sector angle 72°.
The perimeter of this sector is cm. Find the value ofÂ
and the value of
.
 = ................................................Â
  = ................................................  Â
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The diagram shows a square inside a circle.
The points andÂ
lie on the circle.
The radius of the circle is 6 cm.
Work out the total area of the shaded regions.
Give your answer in terms of .
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is a sector of a circle, centre
, radius 10 m.
is the tangent to the circle at point
.
is the tangent to the circle at point
.
AngleÂ
Calculate the area of the shaded region. Give your answer as an exact value in terms of .
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OAB is the sector of a circle, centre O.
OB = 8 cm and angle AOB = 30°.
BP is perpendicular to OA.
Calculate AP.
Give your answer as an exact value. Â
AP = Â ........................................... cm
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Work out the area of the shaded region APB. Give your answer as an exact value in terms of . Â
.......................................... cm2
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 is an arc of a circle, centre
, radius 9 cm.Â
The length of the arc isÂ
cm.
The area of sector isÂ
cm2.
Find the value of .
= ..............................................
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The diagram shows an equilateral triangle ABC with sides of length 10 cm.
AMN is a sector of a circle, centre A.
M is the mid-point of AC.
Work out the area of the shaded region.
Give your answer as an exact value in terms of . Â
......................................... cm2
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The vertices of a square ABCD lie on the circumference of a circle, radius 8 cm. Â Calculate the area of the square. Â
 ......................................... cm2
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i) Calculate the area of the shaded segment. Give your answer as a simplified expression in terms of . Â
 ......................................... cm2 [3]
ii) Calculate the perimeter of the shaded segment. Give your answer as a simplified expression in terms of . Â
 .......................................... cm [4]
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The diagram above shows two shaded shapes, and
.
Shape is formed by removing a sector with radius
form a sector with radius
.
Shape is a circle with diameter
.
The two shaded sections have equal areas.
Find the value of .
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