The rectangle is 80 meters long and 80 millimeters wide. Calculate the perimeter and area of this rectangle.

In order to find the perimeter and area of ​​a rectangle, it is necessary to bring the units of width and length to the same:

80mm = 8cm = 0.08m

In order to calculate the perimeter, you need to find the doubled sum of the length and width:

P = (a + b) * 2, where P is the perimeter of the rectangle; a is the length of the rectangle; в – the width of the rectangle.

P = (80 + 0.08) * 2 = 80.08 * 2 = 160.16 (m).

In order to calculate the area of ​​a rectangle, you need to find the product of length and width:

S = a * b, where S is the area of ​​the rectangle, a is the length of the rectangle, b is the width of the rectangle.

S = 80 * 0.08 = 6.4 (m2).

Answer: 160.16 m and 6.4 m2