(1 pt) Which strategy can be used to solve this problem?
The surface area of a cube is 24 square inches.
What is the perimeter of one of the faces of the cube?
A.
Guess and test.
Guess that the perimeter of one of the faces is 20 inches. This means that each side of a face is 5 cm long. The area of each face would then be 25 square inches. Double this number to get the surface area. This number is greater than 24 square inches. Guess another number, and test it.
B.
Translate into number sentences.
Calculate the area of one of the faces of the cube.
24 = 6a, so 4 = a
Calculate the length of each side.
s × s = 4, so s = 2.
Calculate the perimeter.
P = 4 × 2
C.
Work backward.
Start with the surface area of 24. Divide by 4 to figure out the area of each face. Then multiply that answer by 4 to get the perimeter.