Which of the following could represent the scale factor of the smaller figure to the larger figure?

4:25
6pi:15pi
8:125
20pi:125pi
16pi:250pi
2:5

It could be 2:5 or 6pi:15pi

Step-by-step explanation:

If you write the ratio of the surface area as a fraction, you would get . Simplifying it would leave . But this is NOT the answer because that is the ratio of the surface area. You have to square root it to find the scale factor. The square root is . The answers would be 2:5 and 6pi:15pi.

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92