Why do the same calculation twice? Did you copy the question correctly?
There are two sides with 6 x 9 cm^2 area, two sides with 6 x 20 cm^2 area, and two sides with 9 x 20 cm^2 area. Compute and add up the areas.
You don't need the mass to do this problem.
(A rectangular brick measurses 6cm by 9cm by 20 cm and has a mass of 2.563 kilograms.)
What is the brick's surface area in square centimeters, and square centimeters?
1 answer
1 answer