Find the circumference of the semi circle

Please help and explain
7cm

sweetheart, there isn't a cube below.

for nitrogen to be a liquid, its temperature must be within 12.78 °f of –333.22 °f. which equation can be used to find the maximum and minimum temperatures at which nitrogen is a liquid, x?

the equation that can be used to find the maximum and minimum temperatures is

|x +   ⇒ 333.22| =   ⇒ 12.78.

answer : the point moved thirteen places to the right

on the number line, a point is moved from -8 to 5

on a number line, negative numbers on the left side of 0   and positive numbers on the right side of 0.

to move from -8 to 5 , we move to the left

start from -8 , move to -7 then -6 then -5 then -4 then -3 then -2 then -1 then 0 then 1 then 2 then 3 then 4 and finally 5

so we moved 13 placed to the right.

the point moved thirteen places to the right