Find the surface area and the sum of the lengths of the edges of the cube, edge 11 cm.
August 22, 2021 | education
| Given: the length of the edge of the cube = 11 cm.
a) The cube has 6 faces, each of which is a square.
To find the surface area of a cube, we first need to find the area of one face, and then multiply that number by 6.
S (cube) = (11 * 11) * 6 = 121 * 6 = 726 (cm ^ 2)
b) The cube has 12 edges. Knowing how long one edge has, we can find the sum of all the edges of the cube by the following action:
12 * 11 = 132 (cm)
Answer: a) 726 (cm ^ 2)
b) 132 (cm)
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.