**Answer:**

D) 2a-6

**Step-by-step explanation:**

Graham sold 6 less = -6

Than double what Adriania sold. = 2a

2a - 6

4 is the length and the perimeter is 22<span />

**Answer:**

The perimeter of the square is

**Step-by-step explanation:**

**step 1**

Find the length side of the square

we know that

The area of a square is equal to

where

b is the length side of the square

we have

substitute and solve for b

square root both sides

**step 2**

Find the perimeter of the square

we know that

The perimeter of the square is equal to

we have

substitute

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The sum of interior angles of a convex quadrilateral is 360°, so the average angle is 90°. If two of the angles are actually 90°, the remaining two are 90° ± (10°)/2, so are 85° and 95°.

The angles are 90°, 90°, 95°, 85°.