Step-by-step explanation:
here is the answer to your question
X+7.5=21.5
Subtract 7.5 from both sides
X=14 which is C
hope this helps good luck have a nice day
Answer:
The area is multiplied by 4
Step-by-step explanation:
The area of a circle is directly proportional to its square radius so if the radius is increased by x, the area will be increased by x ^ 2