To find the area of a quarter circle, you simply take a quarter of a full circle. As all quarters are equal, this means that the formula would be <span><span>π<span><span>r2</span>4</span></span><span>π<span><span>r2</span>4</span></span></span><span>. But wait, there's more. If you notice, </span><span><span>π<span><span>r2</span>4</span>=π<span><span>r2</span>2</span></span><span>π<span><span>r2</span>4</span>=π<span><span>r2</span>2</span></span></span><span>. This coincides with the circle formula, just with half the radius. Notice anything? A quarter of a circle can be calculated in the same way a circle a quarter the size can. This means that a quarter circle is equal to a circle a quarter size. In this same way, a ninth of a circle is equal to a circle of one ninth the size.</span>
Answer: 11 degrees
Step-by-step explanation:
Complementary means 2 angles that add up to 90 degrees.
90 degrees - 79 degrees = 11 degrees
Double Check: 79+11 = 90 degrees
Answer:
The final one or the one with (2,000,18000) i need branliest to level up
Step-by-step explanation:
The line has the lowest slope and per foot 9 dollars
Answer:
x = - 
, x = 
Step-by-step explanation:
Given
x² - x - 
= 0 ( add to both sides )
x² - x =
Solve using the method of completing the square
add ( half the coefficient of the x- term )² to both sides
x² + 2( - )x + 
= +
(x - )² = 1 ( take the square root of both sides )
x - = ± 1 ( add to both sides )
x = ± 1
Thus
x = - 1 = -
x = + 1 =
Answer:19
Step-by-step explanation:
−1+(
4
2
(6−1))(2)
=−1+2(6−1)(2)
=−1+(2)(5)(2)
=−1+(10)(2)
=−1+20
=19
