Answer:
Step-by-step explanation:
a=-7
r=21/-7=-3

Y^2+36, because you square y and 6
Answer:
ok
Step-by-step explanation:
Answer:
The solids <u>are</u> similar.
Step-by-step explanation:
Every linear dimension of the larger solid is twice that of the smaller solid. Since the scale factor is the same in every direction, the figures <u>are similar</u>.