Given:

BCDE, DFGH, and EHIJ are squares,

GB is a diameter of circle C(A, r),

B, C, F, G ∈ C(A, r),

CD = a, DF = b, EH = c,

a

Find the area of the shaded region in terms of a, b, and r.

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.