Answer:
252 cm²
Step-by-step explanation:
Lateral surface area = area of the 3 triangular surfaces (the base is not included)
Area of 1 triangular face = ½*bh
b = 12 cm
h = 14 cm
Area = ½*12*14 = 6*14
Area = 84 cm²
✅Lateral surface area = 3(84) = 252 cm²
