What is the surface area of a cube whose sides measure 5 inches?
I did A= s squared
A=5 squared 25 inches squared
Then SA= 25*6=150 inches squared
Is this correct?
Thank you
Right.
Yes, your method and answer are correct!
To find the surface area of a cube, you need to calculate the area of each face and then sum them up. Since all faces of a cube are congruent squares, you can find the area of one face and then multiply it by 6 (the number of faces in a cube).
In this case, you correctly used the formula A = s² to find the area of one face, where "s" represents the length of a side of the cube. Since the side length is given as 5 inches, you correctly squared it to get 25 square inches as the area of one face.
Finally, by multiplying the area of one face (25 square inches) by the number of faces in a cube (6), you correctly obtained the surface area of the cube as 150 square inches.
Well done!