Mensuration

Hi 3 Express pupils,

Remember this problem that I posed to you?

Scenario

The MRT (Mass Rapid Transit) system forms the backbone of the railway system in Singapore with a network spanning the entire city-state.

The system includes tunnels that run underground.

This is a typical underground MRT tunnel.

To ensure that the trains travel through the tunnel safely, the engineer has to know
(1) the perimeter of the wall,
(2) the cross-sectional area of the tunnel.

Task

Suppose that you are the engineer, how would you find the
(1) the perimeter of the wall, and
(2) the cross-sectional area of the tunnel?

What would you ask so that you will understand the Problem better?
Enter your questions under Comments.

Trigonometry

Hi Sec 3E, 3H and 3J pupils,

We have been learning Trigonometry for a number of weeks already. How have you been coping? Are you able to understand all the formulae? Is there anything you want to ask about this chapter?

Try this activity out!

Activity: Exploring the best path


What would you ask so that you will understand the Problem better?
Enter your questions under Comments.