ANSWER

EXPLANATION
The outermost square tile has side length,

The area of a square is given by;

We substitite the given expression for the side length into the formula to obtain,


We expand using the distributive property to obtain;

This gives us:


The last choice is correct.
The value of k in <span>
1/2 k+6=4k-8</span>
is 4
3/8 x 2/6 = 6/48 which simplified is 1/8
Answer:
A=60
Step-by-step explanation:
Add 28+20+12
A=60