Question

every surface of the block shown will be painted, except for one of the bases. how many square units will be painted

Answer 1

To answer the question, we first calculate the area of the cube.

The area of a cube with side length s is given by

$A=6s^2$

Now in our case, s = 3.2 cm; therefore, the above gives

$A=6(3.2cm^{})^2$$A=61.44\operatorname{cm}^2\text{.}$

Now, we are told that all sides have been painted except for one; therefore, we subtract the area of one side from above to get:

$61.44\operatorname{cm}-3.2\operatorname{cm}^2$$=51.2\operatorname{cm}^2$

Hence, 51.2 square units will be painted.