Cylinder net and surface area?
Could someone calculate this problem? I'm writing an exam tomorrow, and the teacher says something about a paddling pool will be in the workbook, and I suspect something similar will be coming up. I don't want any pointless comments; just the calculations, please. I've been working on all the topics and tasks all day, my head is exploding. So, please, I'm asking for it. I'll do the problem on my own first, of course, and then check it with you. Thanks!
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Task 6
Wall surface A1
A1 = d *
A1 = 4.5 * pi() * 1.8
A1 = 25,4469 m2
—
Floor area A2
A2 = r2 *
A2 = 2,25^2 * pi()
A2 = 15,9043 m2
—
Total area of tiles
A = A1 + A2
A = 25,4469 + 15,9043
A = 41,3512 m2
Take the formula for the jacket surface of the cylinder and calculate it.
Take formula for the area of a circle and calculate it.
Add both surfaces.
Please pay when it goes
So first you can calculate the bottom of the pool with the formula A=pi times rhoch2
A=pi times 4.5 high2 = 63,62mhoch2
the volume is calculated with U=d • pi
So U= 4.5 • pi = 14.14 m high 2
to calculate the wall flow: 14,14 • 1.8 = 25,45
then only add: 25,45 + 63,62= 89,07mhoch2