How many square meters of iron sheet should be taken to make a pipe 6 m long and 24 cm in diameter?

Find the area of the pipe using the formula for the area of the lateral sweep of the cylinder:
S = 2 * Pi * r * h;
Where:
h = 6 m – pipe length (cylinder height);
Pi = 3.14;
r = 1/2 * d = 1/2 * 24 = 12 cm – pipe radius (equal to half the diameter).
S = 2 * 3.14 * 12 * 6;
S = 452.16 m².
It turns out that 453 iron sheets will be needed to make the pipe (rounded to the nearest whole).
Answer: 453 pcs