Answer:
54.56
Step-by-step explanation:
A
3
cm
×
10
3cm×10cmstart color #1fab54, 3, start text, c, m, end text, times, 10, start text, c, m, end text, end color #1fab54 rectangle sits inside a circle with radius of
12
12cmstart color #11accd, 12, start text, c, m, end text, end color #11accd.
What is the area of the shaded region?
<u>Formula for circumference of a circle is</u>:
Circumference =
<em>Given circumference of the ring is </em>
<em>Now solving for the radius gives us:</em>
We know that area of a circle is , substituting the value of r we found, we get the area as:
area (A) =
Hence the Area (A), in terms of is
no change
The system would be at equilibrium meaning there would be no change
11
Given:
Using PEDMAS rule to solve it.
Now, simplifying:
We first open parenthesis which is (-7) = -7
=
Now, we evaluate the exponent which is
Next, we divide -36 by 12 to get -3
Next, we multiply -2 and -7 to get 14
Lastly, we add -3 and 14 to get 11
∴ Answer is 11