Answer:
19.625
Step-by-step explanation:
Find the radiu
Radius = Diameter ÷ 2
Radius = 5 ÷ 2 = 2.5 cm
Find the area:
area = πr²
area = 3.14 x 2.5² = 19.625 cm²
Answer: The area is 19.625 cm²
(hope this helps can i plz have brainlist :D hehe)
Answer:
x^2 - 14x + 49
Step-by-step explanation:
(x - 7)(x - 7) = x^2 -7x - 7x + (7)(7)
We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=1/4x²−x+3
where
a=1/4
b=-1
c=3
the coordinates of the focus are
(-b/2a,(1-D)/4a)
where D is the discriminant b²-4ac
D=(-1)²-4*(1/4)*3-----> D=1-3---> D=-2
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> 2
y coordinate of the focus
(1-D)/4a------> (1+2)/(4/4)---> 3
the coordinates of the focus are (2,3)
Answer:
11m-12
Step-by-step explanation:
3×m=3m 3×-4=-12
8m+3m=11m
11m-12
