Answer:
-1352x
Step-by-step explanation:
Because x never got a value and then so it stands there.
We know that
the area A of the circular cross section of the pipe is
A=pi*r²
D=20 cm------------- > r=D/2=20/2=10 cm
then
A=pi*10²=100*pi cm²
the answer is A=100*pi cm²
Answer:
0.75
Step-by-step explanation:
Answer: A =19/2
Step-by-step explanation: Exact form a=19/2 decimal form a= 9.5 , mixed number a= 9 1/2
Answer: |5-2.5|=5
Step-by-step explanation: