3 years ago

Which equation represents the relationship between the radius, r, and arc length, s?

Mathematics

2 answers:

pochemuha3 years ago

7 0

2pie x r= total arc length of a circle

adell [148]3 years ago

6 0

Answer:

s= ø • r

Step-by-step explanation:

i took the test on edg and got it right

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5. A bag contains 46 blue ballons, 30 red ballons, and 24 purple ballons.

alina1380 [7]

Answer:

19 out of 25

Step-by-step explanation:

Add 30+46= 76

Divide 76/100= 19/25

3 0

3 years ago

The area of a circle is increasing at the rate of pi cm^(2)/min. At what rate is the radius increasing when the area is 4pi cm^(

Vikentia [17]

This problem deals the rate of change.
For the formula of the area of a circle, we differentiate both sides with respect to time t.
(A = πr^2) d/dt
dA/dt = 2πr (dr/dt)

Since we don't know yet the radius r, the area of a circle is given.
A = πr^2
r^2 = A/π = 4π/π
r^2 = 4
r = 2 cm

Therefore, the rate of the radius is
dA/dt = 2πr (dr/dt)
dr/dt = (dA/dt)/(2πr)
dr/dt = π/(2π*2)
dr/dt = 0.25 cm/min

Hope this helps.

3 0

2 years ago

Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(−2, 1), B(3, 1), C(3, 4),

Lynna [10]

Answer:

16 units.

Step-by-step explanation: