<h3>
Answer:</h3>
C. the circles are similar
<h3>
Given radius:</h3>
Circle A = 7 cm
Circle B = 21 cm
<h3 />
1) Similar Shape : they can be enlarged and diminished where size varies.
2) Congruent Shape : they must have similar size and lengths.
<h3 />
Hence, here the circles are similar with different lengths.
Answer:
B. 28.26
Step-by-step explanation:
First you have to find the circumference:
R²= 3²=9
Then you multiply your circumference by 3.14 to get you answer:
9·3.14=28.26
<span>5+1×10
= 5 + 10
= 15</span>
Annual Percent Rate (APR) = 18%
Rate during the current billing cycle = 18/12 = 1.5%
Balance at the beginning of the billing cycle = 60.15
Payment 51.00
Balance 10.15
Purchase 91.27
Balance - 81.12
Finance Charge 60.15 * 0.015 = 0.90
New Balance - 82.02
Answer:
The above expression shows that ratios of the areas of the circles are equal to the square of the ratio of their radii.
Step-by-step explanation:
Radius of first circle 
= 9 inches
Area of first circle = 
Area of first circle = 9 × 9 × π = 81 π
Now, since the radius is multiplied by 2/3 for from a new circle.
∴ Radius of the second circle = 
Area of second circle = 
Area of second circle = 6 × 6 × π = 36 π
Now,
∵ = 9 inches and 
= 6 inches
The above expression shows that ratios of the areas of the circles are equal to the square of the ratio of their radii. i.e., 
