Question

a chord of a circle of radius 10 cm subtends a right angle at its center the length of the chord is

Answer 1

a chord that subtends a roght angle at its centre is its diametre
so diamter of circle is 2×radius=2×10=20cm

Answer 2

Answer: the length of the chord is 20 CM

Step-by-step explanation:

As we know that radius multiply 2 is equal to diameter and it is the radius of 10cm and it lies at centre that is why 10*2=20cm