a rectangle with sides 6.5 km and3.4km

what do you need? area or what?

To find the area of a rectangle, you need to multiply the length of one of its sides (usually referred to as the length or base) by the length of the other side (usually referred to as the width or height). In this case, the length of the rectangle is 6.5 km and the width is 3.4 km.

To find the area of the rectangle:
Area = Length x Width

Area = 6.5 km x 3.4 km
Area = 22.1 kmĀ²

Therefore, the area of the rectangle with sides of 6.5 km and 3.4 km is 22.1 square kilometers.