In A ABC, AB = CA and mC = 27°. Find mZB.

since AB and CA is equal, it means that this triangle is an isosceles triangle and that it means that whatever the angle C is, b is also that angle.

so if she is 27 degrees then b is 27° as well

but to find a, you must subtract 180 with the sum of angle b and C

so..

180-(27+27)

180-54

therefore a would be 126°

      2

  2 is to go somewhat to the top right of a because it is squared    

v= a h/3

simple 80 pieces in 1 sercing so 80*47=3760+20=3780