Is the square root of 64 rational? If so what is it as a fraction?

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

a reflection across the x axis and a 90 degree rotation left and right.

the answer is  

d.

21

i did this one. so you should get it right.