Answer:
i think the first and last one.
Step-by-step explanation:
I think the answer is plus bc you need to add
I think the correct answer is C. Since a=πr², in order to get the area to become 1/4 of what it was previously, the radius needs to be cut in half to make the divide that side by 4. a=π(r/2)²=πr²/4 and will therefore multiply the area by 1/4.
Subtract L from both sides
S - L = L - L -rL
S - L = -rL
divide both sides by L
S - L/L = -rL/L
-r = S - L/L
divide both sides by -1
r = -S + L/L
1. A ratio shows the relative sizes of two or more values
2. The ratio is 1:6
