[tex]A = 100\pi cm^{2}[/tex]
Step-by-step explanation:
Given that an engineer is planning to install a new water pipe.
The diameter of the circular pipe is
d = 20 cm
Let us find the radius (r)
radius = diameter / 2
r = 20 / 2 = 10 cm
The area of circle (A) is given as:
[tex]A = \pi r^{2}[/tex]
[tex]A = \pi 10^{2}[/tex]
[tex]A = 100\pi cm^{2}[/tex]
