Answer:
D
Step-by-step explanation:
D is on the same plane as A, B, and C
Answer:
Step-by-step explanation:
r=√((4-1)²+(2+2)²)=√(9+16)=5
area of circle=π r²=3.14×5²=78.50=78.5
Answer:
A. 84
Step-by-step explanation:
84 / 4 = 21
Answer:
9
Step-by-step explanation
Sqaure root of 9 is 3, a rational number
Answer:
Rational
Step-by-step explanation: it equals 40, and 40 is rational