Pleaseee help me i beggg ill droppp a whole bunch of points if u can feel in the boxes

BE= 9.7  AD=23.1  perimeter=70.2

Step-by-step explanation:

we can use the Pythagorean theorem for this (a^2+b^2=c^2)

lets start with the triangle DAC  (AD)

A=22 b=7 c=x

x=23.087 (23.1 rounded)

then we find the missing side of the last triangle  (BE)

x=9.747  (9.7 rounded)

we then add all the missing sides (perimeter)

23.087*2+12*2=70.174 then we can round to 70.2

answer;

the correct answer

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have a nice day < 3

if you was gonna solve for a, a is a   < -12