![]() ![]() So the surface area of this figure is 544, 544 square units. So one plus nine is 10, plus eight is 18, plus six is 24. Rotate it in our brains, although you could do that as well. To open it up into the net 'cause we could make sure We get the surface area for the entire figure, and it was super valuable ![]() And then you have thisīase that comes in at 168. The two magenta, I guess you could say, side panels, 140 plus 140, that's 280. Going to be, let's see, if you add this one and Which is equal to, let's see, 12 times 12 is 144, plusĪnother 24, so it's 168. Over here, which is this area, which is that area right over there. To figure out the area of, I guess you could say Of these, 14 times 10, they are 140 square units. It's also, this length right over here is the same as this length, so it's also 14 high and 10 wide. Now we can think about the areas of, I guess you could consider The total surface area is then calculated by adding. The height of the base is derived from this area. For the triangular base, Heron’s formula is used: Area square root (s (s a) (s b) (s c)) where s is the semi-perimeter of the triangle (s (a + b + c) / 2). But that's also going toīe 48, 48 square units. The calculator employs a combination of mathematical formulas. If it was transparent, it would be this back Six times eight, which is equal to 48 whatever units, square units. Here is going to be 1/2 times the base, so times 12, It has a base of 12 and a height of eight. Of this right over here? Well, in the net thatĬorresponds to this area. So, what's, first ofĪll, the surface area? What's the surface area ![]() So the surface area of this figure, when we open it up, we can justįigure out the surface area of each of these regions. So if you were to open it up, it would open up into something like this, and when you open it up, it's much easier to figure out the surface area. You can't see it just now, it would open up into something like this. If you were to cut it right where I'm drawing this red,Īnd also right over here and right over there and right over there and also in the back where Made out of cardboard and if you were to cut it, It is if you had a figure like this, and if it was What's called nets, and one way to think about ![]() Surface areas of figures by opening them up into
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