Double Trouble

Geometry Level 5

The alternate (interior) angles of a regular pentagon are joined to form another regular pentagon. The ratio of the area of the smaller pentagon to the area of the bigger pentagon in simplest form is (ab×c):d, ( a - \sqrt{b} \times c ) : d, where a,b,c,d a ,b ,c , d all are pairwise co-prime and a>0.a>0. Find a+b+c+d. a + b + c + d.

×

Problem Loading...

Note Loading...

Set Loading...