3rd angle is 100
All Angles of a triangle add together will equal 180
20+60=80
180-80=100
Answer:
41.04
Step-by-step explanation:
thats the answer on khan academy :3 i hope this helps
Part 1: Circumference of circle = inches & Area of circle =
Part 2: Area of circle =
Part 3: Area of square not covered by circle = .
<u>Step-by-step explanation:</u>
<u>Part 1:</u>
We have radius of circle as . Let's find area & circumference of circle:
Circumference of circle =
⇒ Circumference of circle =
⇒ Circumference of circle = =
⇒ Circumference of circle = inches
Area of circle =
⇒ Area of circle=
⇒Area of circle = =
⇒ Area of circle =
<u>Part 2:</u>
Circumference of circle = =
⇒
⇒
Area of circle =
⇒Area of circle = =
⇒ Area of circle =
<u>Part 3:</u>
Perimeter of square = , a is side of square.
⇒
⇒
⇒ a =
Since radius of circle inscribed in square is half of side of square i.e.
Now, Area of square not covered by circle = Area of square - area of circle
⇒
⇒
⇒
∴ Area of square not covered by circle = .
The zeros/roots of the functions are -2, 6, and 7.
Answer:
4*10^2 (400 in scientific notation)
Step-by-step explanation:
2*10^7 / 5*10^4 = 400
400 = 4*10^2 in scientific notation