Answer:
Line 3
Step-by-step explanation:
→ Calculate gradient
The perimeter of a circle is given by:
P = 2 * π * r where r is the raduis.
Therefore the length of a semicircle is π * r
The radius is therefore
r = 10.28mm / π = 3.272mm
1/1000 of a liter is a milliliter, so a.
1 milliliter is equal to 1 cm^3, so b
?= -5.2
Because plug in numbers
(x,y)
4(-2) - 5y = 18
Pemdas
-8 -5y = 18
Add 8 to both sides
-5y = 26
Divide -5 both sides
y = -5.2
Check:
4(-2) -5(-5.2) = 18
Pemdas
-8 -5(-5.2) = 18
Pemdas, two negatives make a positive
-8 +26 = 18
18 = 18
Perhaps
Answer:
C
Step-by-step explanation:
3² * pi * 4 = 113
113 / pi / 3²
gives you 4
this time the radius was squared correctly XD