The lens of a telescope has a radius of 1 foot. What is the lens's circumference? Use 3.14 for ​.

Circumference = 2 x 3.14 x 12

C = 2pi r

1 ft = 12 inches

Step-by-step explanation:

you going to fail stop

step-by-step explanation:

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)