Thirty seven and twenty five thousandths
Answer: 11
Step-by-step explanation: First, 9 times 2 is 18. Then subtract 18-7 which equals 11.
The correct answer is 330.
Formula for surface area of a sphere of radius r is A = 4pi*r^2.
The same formula, for the case where the radius is 2.45 times greater, comes out to A = 4pi*[2.45r]^2.
Just find the ratio of
4pi*r^2 to 4pi*[2.45r]^2. It is 1/6.
