Find the area and the circumference of a circle with radius 3 m. use the value 3.14 for π, and do not round your answers. be sure to include the correct units in your answers.

Circumference: 18.84 m

Area: 28.26

Explanation

For circumference, use the formula *d, where d=the diameter(the radius times 2).

For area, use the formula , where r=the radius. Make sure to square the radius first before multiplying by pi!

A good way to remember these formulas is Cherry(circumference) Pi() is Delicious(diameter) and Apple(area) ("are too")

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: