Question

See the diagram below, which is not drawn to scale:

Answer 1

700.4 cm

Explanation:

Use a proportion.

Let x be the vertical distance for the 700 cm pipe.

1 cm is to 30 cm as x cm is to 700 cm

1/30 = x/700

30x = 1 * 700

30x = 700

3x = 70

x = 70/3

Now we need l. We have a right triangle with legs measuring 70/3 cm and 700 cm, and we are looking for the hypotenuse l.

a^2 + b^2 = c^2

(70/3)^2 + 700^2 = c^2

c^2 = 4900/9 + 490000

c = 700.4

l = 700.4 cm