How do you find the perimeter of a parallelogram with a base of 20mm, side length of 17 mm and height of 15mm. I think a parallelogram is only 2 dimension.

perimeter = 2*(w+h)

2* (20 +17)= 2* (37)= 74

To find the perimeter of a parallelogram, you need to add up the lengths of all its sides. While a parallelogram is indeed a 2-dimensional shape, it still has four sides.

In your case, the given measurements are as follows:
Base = 20 mm
Side length = 17 mm
Height = 15 mm

Since the opposite sides of a parallelogram are equal in length, you can consider the base and the side length as opposite sides. Therefore, you can multiply the base and the side length by 2 to account for both pairs of opposite sides.

Perimeter = 2(Base) + 2(Side Length)
Perimeter = 2(20 mm) + 2(17 mm)

Calculating the values:
Perimeter = 40 mm + 34 mm
Perimeter = 74 mm

So, the perimeter of the parallelogram is 74 mm.

To find the perimeter of a parallelogram, you need to add up the lengths of all its sides. Although a parallelogram is a two-dimensional shape, it has four sides just like any other quadrilateral.

In the given question, we have the base of the parallelogram as 20 mm and two adjacent side lengths of 17 mm. To find the perimeter, we need to determine the length of the remaining side. In a parallelogram, opposite sides are equal in length, so the remaining side will also be 17 mm.

To calculate the perimeter, add up all the side lengths:

Perimeter = Base + Side 1 + Side 2 + Side 3

Substitute the given values:

Perimeter = 20 mm + 17 mm + 17 mm + 17 mm

Perform the addition:

Perimeter = 71 mm

Therefore, the perimeter of the parallelogram with a base of 20mm, side length of 17mm, and height of 15mm is 71mm.