Answer:
R
H
S
= cos
2
x
Step-by-step explanation:
The obvious answer is 6. If three of the lengths are 6, and there are four total sides, then you would need 6 to complete the shape, as it is a square, and a square is a type of trapezoid.
Since I can't draw, you could draw 3 pizzas and cut them all in half, so each person would get half a pizza.
I believe the answer would be 6.
Please mark as brainliest!