00:01
Okay, so this question basically asks us to actually calculate the mass of the goal that we need.
00:11
So the mass is equal to the density times the volume.
00:19
Here the density is given, and then what we need to do is just calculate the volume, the v.
00:29
Now we can try to calculate the volume.
00:31
So for the shit, we actually need the volume of the shit is actually equals to the surface of the shit and times the thickness of the shit.
00:55
So first, the surface is already given, which is 100 feet times 82 feet.
01:05
But we need to convert that to the centimeter square so we know one fit equals to 30 .48 centimeter so now we can actually convert that into so 100 feet times 82 fit equals to 100 times 30.
01:38
8 cm times 82 times 30 .4a centimeter.
01:50
And here you can just use a calculator to do the calculations, and which actually equals to around 7 .618 times 10 to 6 .6 centimeters square.
02:19
And how about the thickness? the thickness, h, is also given, which is 5 millimeters of an inch.
02:35
So 1 milamons is actually equals to 0 .0 .54 milliliter.
02:46
So it says it's 5, so the thickness just simply equals to 5 times 0 .0 .0 .4 milliliter.
02:58
0254 milliter.
03:01
And we have to convert that into the centimeter, right? so it's actually equals to 0 .01 to 7 centimeter.
03:20
And this is the thickness.
03:23
So now we can calculate the total volume, which is simply equals to the surface times the thickness...