An engineer is planning a new water pipe installation. the circular pipe has a diameter of d=20. what is the area of the circular cross section of this pipe? give your answer in terms of pi.

Answer

100pi

Step-by-step explanation:

To find the area you need to do A=pir2 so if you divide 20/2=10x10

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d

yes they are the same