Sofia and ella are both writing expressions to calculate the surface area of a rectangular prism. however, they wrote different expressions.
a. examine the expressions below, and determine if they represent the same value. explain why or why not.

sofia’s expression:
(3 cm × 4 cm) + (3 cm × 4 cm) + (3 cm × 5 cm) + (3 cm × 5 cm) + (4 cm × 5 cm) + (4 cm × 5 cm)

ella’s expression:
2(3 cm × 4 cm) + 2(3 cm × 5 cm) + 2(4 cm × 5 cm)

b. what fact about the surface area of a rectangular prism does ella’s expression show more clearly than sofia’s?