Question

An engineer is planning a new water pipe installation. The circular pipe has a diameter of d=20 cm.

What is the area A of the circular cross section of this pipe?

Answer 1

314.29

Explanation:

Area of circular cross-section is area of the circle with diameter , d= 20; r = 20 / 2 = 10

Area = pi * r^2

= 22/ 7 *.( 10* 10)= 22* 100/ 7 = 2200 / 7 = 314.29