Simplify the formula. You now know enough to find the surface area of any rectangular prism. You can do it faster if you've learned some basic algebra. Start with our equation above: Area of a rectangular prism = lw + lw + wh + wh + lh + lh.
Check the Weather in Perissa, Santorini in September before you book your next holiday. This gives the best indication of the weather in September and includes figures for temperature, sunshine and rainfall. 1  25Â°C max day temperature.
Sea Temperatures. Swimming in the Aegean Sea, which surrounds Santorini, is a refreshing way to enjoy your vacation. The water temperature remains in the 70s from June through October as the sunshine warms the ocean waters. The azure sea waters cool into the 60s the remainder of the year.