The top and bottom, the left side and right side and the front and back will be the same. Length, width and height are three dimensions of rectangular prism, helps to find the surface area. The surface area of the right rectangular prism is 2(lh + hb + bl) . The surface area of a rectangular prism is found by adding the area of all the faces of the prism.
The month of September marks the end of summer in Iceland. The weather begins to cool and depending on the location of each locality, the climate is characterized either by the abrupt decrease in temperature as in the case of Akureyri, or by a strong increase in the intensity and frequency of rain - as for Reykjavik.
Come mid-September, though, almost all of the summer activities will be closed until May of the following year. The colder part of the year is also the time when flight prices to Iceland fall drastically and suddenly the local hotels cut their prices in more than half. Budget travelers wondering when to go to Iceland should aim for February or March. They have more daylight than the earlier winter months. If you decide to go to Iceland in the winter, get ready for very cold temperatures and only 3-4 hours of daylight (called the Polar Nights).