Answer:
Step-by-step explanation:

Answer:
The answer to your question is ratio = 9
Step-by-step explanation:
Data
Circle 1 radius = 5''
Circle 2 radius = 15''
Process
1.- Calculate the area of circle 1
Area = πr²
Area = π(5)²
Area = 25π
2.- Calculate the area of circle 2
Area = πr²
Area = π(15)²
Area = 225π
3.- Calculate the ratio of the areas
ratio = 225π / 25π
= 9
Answer:189 students are there
Step-by-step explanation:252 divided by 4 equals 63, 63 x 3 equals 189
Answer:
5
Step-by-step explanation:
Whenever you multiply square roots that have the same number inside the radicand, you get the number under the radicand. For example, the square root of 4 squared will equal four. Similarly, you are simply squaring the square root of 5, so you should get 5 as your answer.
Answer: 12,000
Step-by-step explanation: In one hour if a copy machine can duplicate 2,400 copies to find how many it can duplicate in 5 hours, multiply 2,400 by 5 hours and you will get a product of 12,00 copies in 5 hour.