Answer:
x=28
y= -4
Step-by-step explanation:
9x+6y= -12
-x-4y= -12
multiply -x-4y=-12 by 9 so the x's are equal
-9x-36y= -108
add the equations so the x's cancel out
-30y=120
plug y into an equation to find x
-x-4(-4)=-12
-x+16= -12
-x= -28
Perimeter is adding all 4 sides together.
So there are 2 sides that are 6.5
So then, 2(6.5) = 13
34 - 13 = 21
21 / 2 = 10.5
Height = 10.5 units
A=πr^2
=3.142×11.2^2
=3.142×125.44
=394.13cm^2
Yea same
