PLS HELP. CIRCUMFERENCE QUESTION! WILL GIVE BRAINLIEST

L = 24,873.6 miles

Step-by-step explanation:

Length of the Circumference

Given a circle of radius r, the length of the circumference, or line surrounding the shape is:

The Earth has a diameter of 7,917.5 miles. The radius is half the diameter:

r=7,917.5/2=3,958.75 miles

Assuming a plane flies around the equator at ground level, the distance it would travel is:

L = 24,873.6 miles

23.75 + [(0.18)(23.75)]

Step-by-step explanation:

Ellen plans to leave an 18% tip with her $23.75 lunch bill.

Therefore, to determine her total bill, she use the expression

= 23.75 + ( 18% of 23.75 )

= 23.75 + ( 0.18 × 23.75 )

or 23.75 + [(0.18)(23.75)]

So the expression is 23.75 + [(0.18)(23.75)] to determine her total bill.