Exemplar Exercise Problems I — task. Mathematics CBSE, Class 9.

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1.

$AD$ is a diameter of a circle and

$AB$ is a chord. If

$AD = 34 cm$ ,

$AB = 30 cm$ , the distance of

$AB$ from the centre of the circle is :

$8 cm$
$15 cm$
$4 cm$
$17 cm$

2. In the figure, if

$OA = 5 cm$ ,

$AB = 8 cm$ and

$OD$ is perpendicular to

$AB$ , then

$CD$ is equal to:

$2 cm$
$5 cm$
$3 cm$
$4 cm$

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