HELP ME PLS I NEED THIS

Step-by-step explanation:

The area of the trapezoid is given by a=1/2(a+b)h

where a=8.52cm , b=22.2cm and h=9.86cm

what’s the question?

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus