Answer:
8 meters.
Step-by-step explanation:
Let the 2 radii be x and 2x, then
π x^2 + π (2x)^2 = 80π
π x^2 + π 4x^2= 80π
x^2 + 4x^2= 80
5x^2 = 80
x^2 = 16
x = 4.
So the radius of the larger circle = 2*4 = 8 m.
For inverse variation, y = k/x
From the given, 9 = k/8
k = 9 * 8 = 72
Thus, y = 72/x
Therefore, when x = 32, y = 72/32 = 2.25
y = 2.25
Answer:
2
Step-by-step explanation:
1/5*10
Answer:
10
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
divide 28 by 7 giving you 4 then multiple that by 3