At a construction site, a builder plans to cut down an 8-foot-by-9-foot piece of plywood. She plans to discard any pieces that she cuts off. She keeps an exactly 7-foot-by-6-foot area of the plywood. What is the area, in square feet, of the pieces of plywood that are discarded?

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Respuesta :

Answer:

30ft²

Explanation:

The area of the plywood that she has:

8 ⋅ 9

=72ft²

The area of the plywood she cut

7 ⋅ 6

=42ft²

The area discarded should be:

72ft² - 42ft²

= 30ft²