Question

The edges of a cube are 5 cm each and the diaganol of a face is approximately 7 cm what is the approximate area of the cross section passing through the diagonal of opposite faces of this cube

Answer 1

The approximate area is 35 square centimeters

Explanation:

we know that

The cross section passing through the diagonal of opposite faces of the cube is a rectangle

so

the approximate area is equal to

`A=bh`

where

b is the diagonal of a face

h is the length side of the cube

we have

`b=7\ cm\\h=5\ cm`

substitute

`A=7(5)=35\ cm^2`