The radius of a circle is 9 times the radius of a smaller circle. The area of the smaller circle is 50 square centimeters. What
is the area of the larger circle?
2 answers:
Answer:
Let R = radius of big circle
r=radius of small circle
A1=Area of small circle
A2=Area of big circle
R=9r
A1=50cm^2
A1=pi*r*2
A2=pi*R^2
A2=pi*(9r)^2
A2=81*pi*r^2
A2=81*A1
A2=4050cm^2
Hence the big circle has area of 4050cm^2
Step-by-step explanation:
Answer:
4050 on edge 100%
Step-by-step explanation:
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