Which is the approximate diameter of a circle with a circumference of 30 m? 10 m 90 m 5 m 15 m

10 m

Step-by-step explanation:

The circumference of a circle is given by

C = pi*d

Substituting what we know

30 = pi*d

Divide each side by pi

30/pi = d

Pi is approximately 3.14

30/3.14 = d

9.55 =d

The closest number is 10

Circumference is the diameter of the circle multiplied by PI

To find the diameter when the circumference is known, divide the circumference by PI.

30 / PI = 30/3.14 = 9.97 Round to 10m

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9