I’m doing test corrections and they are due tomorrow. I don’t know how to do this.

Answer:
x = 22 mm
Step-by-step explanation:
The area of a kite is one-half of the product of the max width and max height.
A = (1/2)(a)(b)
We are given the height and the area, and need to find the width. Plug in the given values and solve.
247.5 = (1/2)(22.5)(b)
495 = (22.5)(b) (multiply both sides by 2 to get rid of the fraction)
22 = b (divide both sides by 22.5 to isolate b)
The width is 22 mm across