Answer:
of the doughnuts have frosting and sprinkles
Step-by-step explanation:
In a box of the doughnuts have frosting.
Of frosting doughnuts have sprinkles.
The doughnuts have frosting and sprinkles = × =
The doughnuts in the box have frosting and sprinkles is .
Tip - for finding the surface area of a triangle put two of them together so it forms a square find the area of that square and divide it by 2