title: Cerebral cortex
context: The cerebral cortex is folded in a way that allows a large surface area of neural tissue to fit within the confines of the neurocranium. When unfolded, each hemispheric cortex has a total surface area of about 1.3 square feet (0.12m2).[5] The folding is inward away from the surface of the brain, and is also present on the medial surface of each hemisphere within the longitudinal fissure. Most mammals have a cerebral cortex that is convoluted with the peaks known as gyri and the troughs or grooves known as sulci. Some small mammals including some small rodents have smooth cerebral surfaces without gyrification.[3]
question: What is the surface area of the human cortex?
answers.text: 1.3 square feet