Answer:
Step-by-step explanation:
Yo entiendo q la A y la C son 12
Y la B y D dan como 19
The formula for calculating the area of a circle is expressed as;
A = πr²
- Area of the pond = πr²
- Area of the path = Area of the path + pond - area of pond
- Area of path = π(r+1.5)² - πr²
Since the area of the path is equal to the area of the pond, hence;
π(r+1.5)² - πr² = πr²
Add πr² to both sides
π(r+1.5)² - πr² + πr² = πr² + πr²
π(r+1.5)² = 2πr²
(r+1.5)² = 2r²
Expand the parenthesis
r²+3r + 2.25 = 2r²
r²+3r + 2.25 - 2r² = 0
-r² + 3r + 2.25 = 0
r² - 3r - 2.25 = 0
Multiply through by 2
2r² - 6.0r - 4.5 = 0
<em>This proves the required equation</em>
<em />
Learn more on area of composite figures here: brainly.com/question/15981553
b is an ipotenuse, so b > a and 2a+b>3a
Answer:
h-15=42 ~~~~ Brainliest would be nice :') thank u!
Step-by-step explanation:
Answer:
D. 3,750
Step-by-step explanation:
Use proportions to solve:
125/500 = x/15000
Cross multiply:
125*15000 = 1,875,000
1,875,000/500 = 3,750
x = 3,750