Question

The length of chord to a circle with radius $10cm$ and distance from center is $8cm$

• A. $10cm$
• B. $12cm$
• C. $6cm$
• D. $16cm$

Answer 1

The correct option is B $12cm$

The radius of Circle is $10cm$

The distance form Center is $8cm$

The length of chord is $2\sqrt{r^2-d^2}$

$⟹2\sqrt{(10{)}^2-(8{)}^2}$

$⟹2\sqrt{100-64}$

$⟹2\sqrt{36}$

$⟹12cm$