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Alex simplified the expression 7+(3x 1. 4)+5+2+(5x1. 4) to find the area of the figure on the grid.

What error did Alex make?

He found the perimeter of the figure instead of the area.

He added the lengths of the lines creating the indentation instead of subtracting them.

He used 5x1. 4 and 3 x 1. 4 as the length of each diagonal line instead of 5 and 3.

He added the five lengths together instead of multiplying them.

Respuesta :

adioabiola

The error Alex made while simplifying the expression 7+(3x 1. 4)+5+2+(5x1. 4) is "he found the perimeter of the figure instead of the area".

How to find area of an object?

The area of an object is the product of the length and width of the objects.

Alex added the dimensions of the grid instead of multiplying them.

7+(3x 1. 4)+5+2+(5x1. 4)

For instance,

  • Area of a rectangle = length × width
  • Perimeter of a rectangle = 2(length + width)

Therefore, Alex found the perimeter of the figure instead of the area".

Learn more about area:

https://brainly.com/question/13048427

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