I believe your answer is D
Answer:
60cm²
Step-by-step explanation:
Surface area of a triangular prism = 2B+ph
B is the base area = 6cm²
perimeter p = 12cm
altitude h = 4cm
Substitute
Surface area = 2(6) + 12(4)
Surface area = 12 + 48
Surface area = 60cm²
You put the points on the line for example .5 will go on point .5 on the line etc
