tag:blogger.com,1999:blog-6479061363935732747.post8319564693673822602..comments2016-02-29T11:27:35.947+08:00Comments on 2011 S1-01 Maths Blog: Maths Viva Voce-Question 1(Wang ruoyu)Loh Kwai Yinnoreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6479061363935732747.post-62454861894277392862011-10-17T16:45:02.650+08:002011-10-17T16:45:02.650+08:00Part (i): Very clearly stated upfront that it'...Part (i): Very clearly stated upfront that it's a fact that opposite sides of a rectangle are equal, hence resulted the equation. You have also clearly pointed out that to solve an equation, we have to balance it when solving. You could have further elaborate on how you balance the equation, i.e. the step before arriving at 7+3=3x-2x. <br /><br />Part (ii): You have also pointed out we must apply the fact that area of rectangle = length x breadth. Good 'reminder' to the viewer that the unit is "cm" since we usually 'drop' the units in the working. Good choice of mathematical terms used.<br /><br />Note: Reading the units, "cm^2" should be read as "square centimetre"<br /><br />Part (iii): You are right that 1 cm = 100 cm. To convert length from cm to m, we can just divide by 100. However, now you are converting "area", which will require you to divide by 100 twice. Answer should be 0.023 m^2LOH Kwai Yinhttp://www.blogger.com/profile/06503397685892227762noreply@blogger.com