While it's true that strawberries are covered in tiny yellow seeds, the red edible part of the strawberry is not actually a fruit. The dried seeds on the outside of the strawberry are the actual fruit.
The fleshy part of the strawberry is a part of the flower located under the ovary, known as the receptacle or accessory fruit. This part of the flower swells and turns bright red to attract animals to eat and distribute the seeds. These small seed-like dried fruits are known as achenes.
Cashews are another example of accessory fruit. The edible nut is actually a drupe, which is another example of a receptacle swelling to promote the fruit.