Circumference and Area of a Circle Exam Questions
Circumference and Area of a Circle Exam Questions
Jasmin has a pond in her garden.
The surface of the pond is a semicircle of radius 1.4m
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Calculate the area of a semicircle of radius 1.4 m. Give your answer to a sensible degree of accuracy. You must show your working. (3 marks)
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A cylinder has a radius of 5 cm.
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Calculate the circumference of a circular end of the cylinder. (2 marks)
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A giant paper clip is placed alongside a centimetre ruler. The curved ends are semicircles.
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Calculate the length of wire used to make the clip. (5 marks)
A tin of diameter 7 cm and height 12 cm has a label around it.
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The label is glued together using a 1 cm overlap.
There is a 1 cm gap between the label and the top and the bottom of the tin.
Find the length and the height of the label. (4 marks)
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(a) Calculate the area of a circle of radius 8 cm. (3 marks)
(b) A semi-circular protractor has a diameter of 9 cm.
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Calculate the perimeter. (3 marks)
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A circular pond has a radius of 2.2 m.
(a) Calculate the circumference of the pond. (2 marks)
(b) Calculate the area of the pond. (3 marks)
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