Two parallel lines touch a circle at points A and B respectively. If the area of the circle is 25 $π$ ${c m}^{2}$ , then AB is____________.

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Solution

The correct option is C
10

Area of the circle = $25 π$

$π$ $r^{2} = 25 π$

$r^{2} = 25$

$r = 5$ cm

Distance between two parallel lines = diameter, hence $A B = 10$ cm

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Two parallel lines touch a circle at points A and B respectively. If the area of the circle is 25 π cm2, then AB is____________.

The correct option is C 10 Area of the circle = 25π​ π r2=25π r2=25 r=5 cm Distance between two parallel lines = diameter, hence AB=10 cm

Two parallel lines touch a circle at points A and B respectively. If the area of the circle is 25 $π$ ${c m}^{2}$ , then AB is____________.

The correct option is C
10

Area of the circle = $25 π$

$π$ $r^{2} = 25 π$

$r^{2} = 25$

$r = 5$ cm

Distance between two parallel lines = diameter, hence $A B = 10$ cm