Area of a circle is πr^2.
The radius of the smaller circle with diameter 10 cm is 5 cm.
The radius of the larger circle with diameter 20 cm.is 10 cm.
Area of larger circle : Area of smaller circle
Area of larger circle = 100π.
Area of smaller circle = 25π.
Ratio = 100π : 25π or 100π/25π.
Answer:
Is it B
Step-by-step explanation:
using pythagorean theorem
a^2 + b^2 =c^2
a^2 +8^2 =14^2
a^2 +64 = 196
subtract 64 from each side
a^2 = 132
take the square root of each side
a^2 = sqrt (132)
a=11.48912529
a =11.5
Find 6% of $400 and add to $400.
6% of $400 =
= 6% * $400
= 0.06 * $400
= $24
6% of $400 is $24. That is the interest earned on $400 at 6% for 1 year.
Now we add it to the original amount, $400.
$400 + $24 = $424
Answer: $424
