Question

answer the pic please

Answer 1

In a right-angled triangle, the radius of a circumcircle is half the length of its hypotenuse.
.
Hypotenuse = √20×20+21×21
= √400+441
= √841
= 29
radius = 29/2=14.5 cm

Answer 2

Hey mate,

The circumcircle is a triangle's circumscribed circle, i.e., the unique circle that passes through each of thetriangle's three vertices.
In right angled triangle the radius of this circle passes through the mid point of hypotaneous.

So radius is
$\sqrt{841} \div 2$ = 14.5 cm
I hope this will be helpful please make it brainliest
Thank you (*_)