Alaina bought a square frame for her desk that has an area of 81 square inches. What is the perimeter of the frame? (answer should be a number only)

Given:

Area of a square frame = 81 square inches.

To find:

Perimeter of the frame.

Solution:

Let length of each side of the frame = a inches.

Area of square frame is

Taking square root on both sides,

Side length cannot be negative. So, a=9 inches.

Perimeter of frame is

Therefore, the perimeter is 36 inches.

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step-by-step explanation:

use that smart brain

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.