So the area of the entire figure is 42 square meters. And one 10 and two 10's or a 10 and a 20 is 30. Definitions of geometric objects Checkpoint: Line and angle theorems. Six plus nine is 15, 15 plus 27, let's see, five ones and seven ones is 12 ones. Learn Geometry skills for free Choose from hundreds of topics including transformations, congruence, similarity. In this unit, well be exploring area Well learn some handy ways to figure out just how much space a shape covers-from counting squares, to multiplying, to breaking shapes down into smaller pieces. So we have six square meters, plus nine square meters, plus 27, and we can solve that, Everything around us has a measurable area from the floor we walk on to the walls of our rooms. So, if we combine all those areas, all those square meters it covers, that will tell us theĪrea of the entire figure. The green covers nine square meters, and the blue covered six square meters. So the area of this purple section, it covers completely 27 square meters. Have three rows of nine or nine rows of three square meters which is 27 square meters. Of three square meters or nine square meters, and then finally this purple one has three meters and nine, so we can say it will The next one, our measurementsĪre three and a three, so it will have three rows This rectangle covers six square meters, so this part of the entire figure covers six square meters. Going to cover one square meter, two square meters, three square meters, and then there's two rows of that, so there's two rows of three square meters for a total of six square meters. So if we draw those lines out, we can see this top row is Of two meters down here so we can split that in half. That by three meters, into three equal meters, and then we've got a width This one is three meters long, so we can kind of divide Would tell me the area of the entire figure, how much space the entire figure covers. So what we did is, we broke this up or decomposed it into three rectangles and now if I find out how much space this purple one covers, and the blue one and the green one, if I combine those, that Us with this last part, which is again, a rectangle. We could call that oneĪ rectangle or a square. So what I can do, because I can see, if I can find any rectangles in here. The area of the figure? So down here we have this one, two, three, four, five, six, seven,Įight, nine, 10-sided figure, and we want to know its area, how many square metersĭoes this figure cover? And we have some measurements, that seems helpful, but what's not too helpful to me is I don't know the special trick to find the area of a 10-sided figure so I've got to think about what I do know and what I do know is the way to find area of a rectangle.
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