Question

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

Answer 1

BE= 9.7 AD=23.1 perimeter=70.2

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

`22^2+7^2=x^2`

`x^2=533\\√(x^2) =√(533)`

x=23.087 (23.1 rounded)

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

`x^2+7^2=12^2`

`x^2+49=144\\x^2=95\\√(x^2) =√(95)`

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