The answer is D because you have to sneer what is in the parentheses first
Answer:
A
Step-by-step explanation:
You divide the diameter by 2 to get radius. So 5÷2=2.5
So then you multiply 2.5 by pi aka 3.14 so 2.5x3.14=7.85 So we rounds 7.85 to 7.9
Answer:yes
Step-by-step explanation:divide each dimension
Rational
✓3×✓12 =✓36=6,6 belongs to Rational Numbers