Answer:
E. 72w²
Step-by-step explain:
= 9w × 9w
= 81w²
= 3w × 3w
= 9w²
= 81w² - 9w²
= 72w²
(E) 72 w^2 is the answer
Explanation:
outer square area is 81 w^2
inner square area is 9 w^2
subtracting outer - inner we can get the shaded area
so 81 -9= 72w^2
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