Question

Two concentric circles are drawn in such a way that radius of the outer circle is equal to diameter of the inner circle. If a point is marking in the picture without looking in it,​

Answer 1

Step-by-step explanation:

the existence of Biosphere depend on humans.

Answer 2

Answer:

According to question,

Radius of larger circle is 5cm

and length of tangent AC to smaller circle is 8cm.

We know that , tangent is perpendicular to radius through point of tangency,

And M, is the mid point of tangent from figure,

so AM=4cm

Therefore ,

△AMO is the right angle triangle, with OM as radius of smaller circle,

So, from pythagorous theorem,

OA

2

=OM

2

+AM

2

=> 5

2

=OM

2

+4

2

=> OM=3

=> Hence radius of smaller circle =3cm