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Hi, can you help me please? :)

 May 9, 2021
 #1
avatar+2205 
+3

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?

 

=^._.^=

 May 9, 2021
 #2
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+3

Hi, wouldn't AD = AB as well?

Guest May 9, 2021
 #4
avatar+114485 
+2

I think you got confused catmg ???

Melody  May 9, 2021
 #5
avatar+2205 
+2

Oopsies, my bad. 

AC = AE + EC, not AD + EC. 

I'm sorry if I got you confused. 

 

=^._.^=

catmg  May 9, 2021
 #3
avatar+114485 
+3

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

 May 9, 2021
 #6
avatar
+2

oh yes, this helps Melody. Thanks!

Guest May 9, 2021
 #7
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0

Area of ΔABD = AE [sqrt(AD2 - AE2)]           (AD = AC)

 May 9, 2021

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