Problem

an engineer is planning a new water pipe installation. the circular pipe has a diameter of d=20\text{ cm}d=20 cmd, equals, 20, space, c, m.

what is the area aaa of the circular cross section of this pipe?

give your answer in terms of pi.

The area of the circular cross section of the pipe is

Step-by-step explanation:

we know that

The area of the circle (cross section of the pipe) is equal to

we have

----> the radius is half the diameter

substitute

its electric no smoke

step-by-step explanation:

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer