Question
Ramesh has a rectangular block of wood 9 cm by 4 cm by 7 cm. He painted all the faces of the block.
(a) What is the total painted area?
(b) Ramesh cut the block into 1-cm cubes. How many of these cubes have only 1 of their faces painted?
Solution
![P6 / Temasek / 2019 / SA2 Prelims / Paper 2 – Q05 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2021/06/P6_SA2_2019_Temasek_Paper2_Q05-Qns.jpg?resize=400%2C222&ssl=1)
![P6 / Henry Park / 2021 / SA2 / Paper 2 –
Q04 [2 marks]](https://i0.wp.com/sgprimaths.com/wp-content/uploads/2022/06/P6_SA2_2021_Henry_Park_Paper2_Q04-Qns.jpg?resize=400%2C260&ssl=1)