Question

question 6 help out best will be marked as brainest

Answer 1

Answer:

20√3

Step-by-step explanation:

Given, radius = 20 m.

From figure:

AM and CN are median, O is the centre of the circle.

AO = 2OM = 20.

⇒ OM = 10 m.

⇒ AM = OA + OM

          = 20 + 10

          = 30 m.

Now,

Let BM = x.

∴ BM = MC = x.

∴ BM = (1/2) * BC

        = (1/2) * BC

⇒ BC = AB = 2x.

In ΔAMB,

⇒ AB² = AM² + BM²

⇒ (2x)² = (30)² + (x)²

⇒ 4x² = 900 + x²

⇒ 3x² = 900

⇒ x² = 300

⇒ x = 10√3

Then, AB = 2x

                = 2(10√3)

                = 20√3

Therefore, Length of the string of each phone = 20√3.

Hope this helps!