Answer:
Surface area of the cube =
Step-by-step explanation:
Given shape in figure 1:
Cube with edge length = 5 cm
To find the surface area of the cube.
Solution:
The surface area of a cube is given by the formula:

where
represents the length of the edges of the cube.
For the given cube 
Plugging
in the formula to find the surface area of the cube.

∴ 
Answer:
n = 18
Step-by-step explanation:

Cross multiply and simplify

Divide both sides of the equation by 5

Simplify : Cross cancel common factor: 5

To find the height of the prism, you will use the formula for finding the area of a rectangular prism and solve for the height.
V = lwh
651.168 = 12.6 x 15.2 x h
651.167 = 191.52 x h; divide both sides by 191.52
h = 3.4 inches
The height is 3.4 inches.