"It is a big and beautiful beach."
Translation:C'est une grande et belle plage.
If the question asked us to translate it is a big and beautiful but dangerous courthouse would the correct translation be c'est un grand et beau tribunal mais dangereux or would mais dangereux come after beau ?
Also, as CJ Denis asked, how would you say It's a beautiful and warm beach ? C'est une belle plage chaude ?
Look up the "BAGS" rule online. Or you can simply memorize the 20 or so of the most common adjectives that have this property. Read here: