I'm pretty sure that they are there to show symmetry
$14.62 = d / 4
Here is one variation of an equation that satisfies your request. You could also put the amount of people as a variable, or the total amount paid.
Answer:
21 cm squared
Step-by-step explanation:
The area of a triangle is base times height divided by 2, or
a = base time height/2
The base here is 7cm and the height is 6cm.
7 times 6 is 42.
42 divided by 2 is 21
