The base is a triangle, so the formula for finding the area of a triangle is b x h / 2
2 x 3 = 6 / 2 = 3
and the formula for finding the volume of a triangular prism is b x h
3 x 14.4 =43.2 and rounded to the nearest whole number would be 43
so A is your answer
21•3.14=65.94 the circumference is 65.94
Step-by-step explanation:
