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9 questions · self-marked practice — reveal the answer and mark yourself.

Question 12 Marks
From the following figure, fill in the blanks:

Image

(1) If OP = 4cm then AB = _________ cm, OA = _________ cm, OB = _________ cm.
(2) If AB = 10 cm then OA = _________ cm, OB = _________ cm, OP = _________ cm.

Answer
(1) AB = 8 cm, OA = 4 cm, OB = 4 cm
(2) OA = 5 cm, OB = 5 cm, OP = 5 cm
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Question 52 Marks
Draw a circle and take points A, B, C on the circle. L, M, N in the interior of the circle, P, Q, R in the exterior of the circle.
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Question 62 Marks
In the table below, write the names of the points in the interior and exterior of the circle and those on the circle.
Answer
Solution is as follows:
Image
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Question 82 Marks
If the diameter of a circle is 6 cm, what will its radius be?
Answer
Radius

$\begin{aligned} & =\text { diameter } \div 2 \\ & =6 \div 2 \\ & =3 \mathrm{~cm}\end{aligned}$

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Question 92 Marks
If the radius of a circle is 5 cm, what will its diameter be?
Answer
Diameter

$\begin{aligned} & =2 \times \text { radius } \\ & =2 \times 5=10 \mathrm{~cm}\end{aligned}$

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