What is the value of B for the following triangular prism? Remember that there are 10 millimeters in a centimeter

Answer:
B
Step-by-step explanation:
1) transform mm in cm
12 : 10 = 1,2 cm
2) find the base area
base area = (leg 1 x leg 2)/2 = (1,2 x 4,5)/2 = 2,7 cm^2