Answer:
Maby b
Step-by-step explanation:
sorry if wrong
Answer:
find using calculator yourself:))
Step-by-step explanation:
pi x r x r = pi x 88 x 88 = answer
Answer: 78
Step-by-step explanation:
6(4+9)
use foil to distribute the 6 to the 4 and 9
6×4 + 6×9
24 + 54
⇒ 78
Answer:
x²+y² = 64
Step-by-step explanation:
The standard form of writing the equation of a circle is expressed as;
(x-a)²+(y-b)² = r² where;
(a, b) is the centre of the circle
r is the radius of the circle
Given the diameter of the circle with endpoints (8,0) and (-8, 0)
d = √(x2-x1)²+(y2-y1)²
d = √(-8-8)²+(0-0)²
d = √(-16)²
d = √256
d = 16
radius r = 16/2
r = 8
The centre of the circle will be the midpoint of the coordinates
M = (8-8/2, 0+0/2)
M = (0/2, 0/2)
M = (0,0)
Hence the centre is at (0,0)
Get the required equation
Recall that (x-a)²+(y-b)² = r²
Substitute the centre and the radius
(x-0)²+(y-0)² = 8²
x²+y² = 64
This gives the required equation
Answer:
1) 50.4
2) 38.4
3) 115.2
Step-by-step explanation:
1) x+12
2) x
3)3x
X+12+x+3x = 204
5x=204-12
5x=192
x = 192/5
x = 38.4
1) 38.4 +12=50.4
2) 38.4
3) 3*38.4 = 115.2
50.4+38.4+115.2 = 204
