The area of a circle uses the radius of a circle, which is 1/2 the diameter.
In the calculation the radius is squared.
Since the diameter of the larger circle is twice as large the radius would be 2 times.
2 squared would be: 2^2 = 4
This means the area of the larger circle is 4 times larger which would make the ratio 4:1
Answer:
24 feet 9 inches
Step-by-step explanation:
14 ft + 9 ft = 23 ft
10 in + 11 in = 21 in - 1 ft = 9 in
23 feet + 1 ft + 9 in = 24 feet and 9 inches
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50 because 80+50+x=180 (inside triangle) x=130 180-130= 50 (angle outside triangle)
Split it up
3x^2+12x-5x-20
group
(3x^2+12x)+(-5x-20)
factor
(3x)(x+4)+(-5)(x+4)
undistribute (x+4) like ab+ac=a(b+c)
(3x-5)(x+4)