Formula: pi* r^2* h/3
Cone A= 12.57
Cone B= 50.27
To solve this you first expand the brackets.
4x^2 - 20x + 25 = 49
Then make it equal 0.
4x^2 - 20x - 24 = 0
Now solve the quardratic.
x^2 - 5x - 6 = 0
(x - 6)(x + 1) = 0
x = 6 or x = -1
A) Y= -3....hope that helps
Answer:x = -12
Step-by-step explanation:<!>BRAINLIEST APPERICATED<!>
The answer is D which is greater than 11 and less than 23.
<span>Sum of 2 sides of triangle is always greater than the third side.
And absolute difference of 2 sides of a triangle is always less than the 3rd side.
From that, 3rd side ia less than 6+17 = 23
and greater than 17-6=11.</span>