Perimeter and Area on a Grid

Problem 1

Find the perimeter and the area of the shaded shape on the grid

The shaded shape on the grid is a rectangle. Its length is 4 units and width is 3 units.

Perimeter of the shaded shape = 3 + 4 + 3 + 4 = 14 units

Area of the shaded shape = length width

= 4 3 = 12 square units

Problem 2

Find the perimeter and area of the shaded shape on the grid

The shaded shape on the grid is a combination of shapes. Its side lengths are 2, 2, 2, 1, 3, 4, 3, and 1 units

Perimeter of the shaded shape = 2 + 2 + 2 + 1 + 3 + 4 + 3 + 1 = 18 units

Area of the shaded shape = sum of shaded squares 1 square unit

= 16 1 = 16 square units

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