The sum of the areas of two circles is 80 pie square meters. find the length of a radius of each circle if one of them is twice as long as the others

The radius of the circles are  and  

Step-by-step explanation:

Let

x-----> the radius of larger circle

y----> the radius of smaller circle

we know that

-----> equation A

Remember that

-----> equation B

substitute equation B in equation A and solve for y

Find the value of x

therefore

The radius of the circles are  and  

i think 1: 2

step-by-step explanation:

answer: 5 17/33 % (to the tenth)

step-by-step explanation:

he guessed: 34.5 pounds

actual weight is 32.7

there for he is off:

34.5 -32.7 = 1.8

32.7 is the 100%

1.8 represents %? of 32.7

therefore:

32.7   - 100%

1.8     -     x%

x= 1.8*100%/32.7% = 18*100%/327%

x=1800%/327%   = (5 165/327)%

to the tenth:

5 17/33 %