Step-by-step explanation:
The formula for calculating a circle's circumference is πd, where π is an irrational number (3.14....) and d is the diameter of the circle.
In the circle with diameter 19.5cm, the circumference is around 3.14 * 19.5cm = 61.23cm. (A)
Answer:
(2, 5)
Step-by-step explanation:
plug the numbers into the equations
or
rearrange the top equation to be y = -5 + 5x
plug this in for y in the second equation.
-4x + 2 (-5 + 5x) = 2
solve for x
-10 + 6x = 2
6x = 12
x = 2
plug this into one of the equations to get y
-5*2 + y = -5
-10 + y = -5
y = -5 + 10
y = 5
Step-by-step explanation:
b×5×c×8/b×3×c×2
5/3×4
the answer is 20/3
9514 1404 393
Answer:
QR = 2
Step-by-step explanation:
The sum of ratio units is 4+5+2 = 11, corresponding to the total length OP +PQ +QR = OR. OR is also 11, so each ratio unit stands for 11/11 = 1 length unit.
The number of ratio units associated with QR is 2, so the length of QR is 2.
Answer:
6.25km
Step-by-step explanation:
5/4=1.25
1.25x5=6.25