Question

Two circles of radii 7&28 touch each other externally. Fibd the length of common tangent

Answer 1

Answer:

BIG CIRCLE RADIUS = 28

SMALL CIRCLE RADIUS = 7

WE KNOW THAT TANGENT IS PERPENDICULAR AND RIGHT ANGLE TO CENTRE OF CIRCLE

SO, BY PYTHAGORAS THEROEM

==> (7)²+(28)² = (AO)²

==> √49+784 = A0

==> √833 = AO