HELP!!!

The surface area of two similar rectangular prisms are 361m2 and 441m2. What is the scale factor of the larger prism to the smaller prism?
A.) 361/441
B.) 19/21
C.) 21/19
D.) 19/11

Question

HELP!!!

The surface area of two similar rectangular prisms are 361m2 and 441m2. What is the scale factor of the larger prism to the smaller prism?
A.) 361/441
B.) 19/21
C.) 21/19
D.) 19/11

anonymous · Answer

It would be A if you were going from the smaller to larger because in order to find the scale factor, you divide the first number by the second. To check if it is correct (the scale factor would be 1.22) you multiply the scale factor by the second number.