SAT Subject Test Mathematics Level 1

You know    that    triangle    ACD is  a   right   triangle    because side    AD  is  a

diameter    and C   is  a   point   on  the circle. The legs    of  triangle    ACD are 8   and

3,  so  the hypotenuse

The radius  is  half    that,   or   Plug    into   the circle  area    formula:

43 . A

Sketch  a   diagram: