I think its 24% because .24 x 50 is 12 but I could be doing it wrong, sorry I can't say for sure.
Answer:
4n r+
Step-by-step explanation:
Try using calculator cause I seen this before.
It could be a building with a triangular top. If the building had a triangular top, then it must have 3 rectangles as its sides. So your answer would be, a building with a triangular top.