Hi, can you help me please? :)

I'm going to assume that A is the center of the circle.

AC = AB since they're both the radius.

AD + EC = AB

Can you figure it out from here?

=^._.^=

Hi, wouldn't AD = AB as well?

I think you got confused catmg ???

Oopsies, my bad.

AC = AE + EC, not AD + EC.

I'm sorry if I got you confused.

YES

AB = AC = AD all radii.

I assume AE=7.5cm

radius = 7.5+5=12.5cm

Use pythagoras's theorum to find ED

then area of a triangle formula

oh yes, this helps Melody. Thanks!

Area of ΔABD = AE [sqrt(AD^{2} - AE^{2})] (AD = AC)